Why is the exclamation mark important in programming?

This is a recommends products dialog
Top Suggestions
Starting at
View All >
Language
French
English
ไทย
German
繁體中文
Country
Hi
All
Sign In / Create Account
language Selector,${0} is Selected
Register & Shop at Lenovo Pro
Register at Education Store

Pro Tier Benefits

• Save up to an extra 5% on Think everyday pricing
• Spend ฿250,000 advance to Plus Tier with increased benefits

Plus Tier Benefits

• Save up to an extra 8% on Think everyday pricing
• Spend ฿750,000, advance for free to Elite Tier with increased benefits
• Take advantage of flexible payment options with TruScale Device as a Service.

Elite Tier Benefits

• Save up to an extra 12% on Think everyday pricing
• Take advantage of flexible payment options with
TruScale Device as a Service.
Reseller Benefits
• Access to Lenovo's full product portfolio
• Configure and Purchase at prices better than Lenovo.com
View All Details >
more to reach
PRO Plus
PRO Elite
Congratulations, you have reached Elite Status!
Pro for Business
Delete icon Remove icon Add icon Reload icon
TEMPORARILY UNAVAILABLE
DISCONTINUED
Temporary Unavailable
Cooming Soon!
. Additional units will be charged at the non-eCoupon price. Purchase additional now
We're sorry, the maximum quantity you are able to buy at this amazing eCoupon price is
Sign in or Create an Account to Save Your Cart!
Sign in or Create an Account to Join Rewards
View Cart
Wow, your cart is empty!
Remove
item(s) in cart
Fill it in with great deals
Some items in your cart are no longer available. Please visit cart for more details.
has been deleted
Please review your cart as items have changed.
of
Contains Add-ons
Proceed to Checkout
Yes
No
Popular Searches
What are you looking for today ?
Trending
Recent Searches
Hamburger Menu
{"arrowColor":"#000000","backgroundColor":"#e6f4fa","sideMsg":{"t_id":"","language":{"th":"","en_th":"","en":"","th_th":""},"id":""},"data":[{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Page73e354ea-3315-42cc-a7e9-2d55231a217f","language":{"th":"","en_th":"%3Cp%3E%3Cstrong%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3EBlack%20Friday%20Deals%20are%20Here%3C%2Fstrong%3E%3Cspan%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%26nbsp%3B%7C%20Get%20up%20to%2050%25%20off%20PCs%20%26amp%3B%20accessories%20for%20a%20limited%20time.%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fdeals%2Fonline-exclusive%2F%3FipromoID%3Dhellobar_01_bf%22%20target%3D%22_self%22%20textvalue%3D%22Shop%20Deals%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3EShop%20Deals%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E","en":"","th_th":"%3Cp%3E%3Cstrong%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%E0%B8%94%E0%B8%B5%E0%B8%A5%E0%B8%AA%E0%B8%B3%E0%B8%AB%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B9%81%E0%B8%9A%E0%B8%A5%E0%B9%87%E0%B8%84%20%E0%B8%9F%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B9%80%E0%B8%94%E0%B8%A2%E0%B9%8C%E0%B8%AD%E0%B8%A2%E0%B8%B9%E0%B9%88%E0%B8%97%E0%B8%B5%E0%B9%88%E0%B8%99%E0%B8%B5%E0%B9%88%E0%B9%81%E0%B8%A5%E0%B9%89%E0%B8%A7%3C%2Fstrong%3E%3Cspan%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%26nbsp%3B%7C%20%E0%B9%80%E0%B8%A7%E0%B8%A5%E0%B8%B2%E0%B8%88%E0%B8%B3%E0%B8%81%E0%B8%B1%E0%B8%94%3A%20%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%AA%E0%B9%88%E0%B8%A7%E0%B8%99%E0%B8%A5%E0%B8%94%E0%B8%AA%E0%B8%B9%E0%B8%87%E0%B8%AA%E0%B8%B8%E0%B8%94%2050%25%20%E0%B8%AA%E0%B8%B3%E0%B8%AB%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%9E%E0%B8%B5%E0%B8%8B%E0%B8%B5%E0%B9%81%E0%B8%A5%E0%B8%B0%E0%B8%AD%E0%B8%B8%E0%B8%9B%E0%B8%81%E0%B8%A3%E0%B8%93%E0%B9%8C%E0%B9%80%E0%B8%AA%E0%B8%A3%E0%B8%B4%E0%B8%A1%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fdeals%2Fonline-exclusive%2F%3FipromoID%3Dhellobar_01_bf%22%20target%3D%22_self%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3E%E0%B9%80%E0%B8%A5%E0%B8%B7%E0%B8%AD%E0%B8%81%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B8%82%E0%B9%89%E0%B8%AD%E0%B9%80%E0%B8%AA%E0%B8%99%E0%B8%AD%E0%B8%95%E0%B9%88%E0%B8%B2%E0%B8%87%20%E0%B9%86%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E"},"id":"Page73e354ea-3315-42cc-a7e9-2d55231a217f"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Pagec79ed265-1f1d-4ef0-a835-a01f68c16f25","language":{"th":"","en_th":"%3Cp%3E%3Cstrong%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3EWin%20Gifts%20Worth%20Up%20to%20THB72%2C800%3C%2Fstrong%3E%3Cspan%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%26nbsp%3B%7C%20Shop%20from%201st%20-%2030th%20Nov%20%26amp%3B%20top%20spenders%20stand%20a%20chance%20to%20win%20Lenovo%20Products%20worth%20up%20to%20THB72%2C800!%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fth%2Flenovopro%2Fen%2Fsmbaccount%2Fgatekeeper%2Fshowpage%3FipromoID%3Dhellobar_02_lpro%22%20target%3D%22_self%22%20textvalue%3D%22Join%20Now%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3EJoin%20Now%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E","en":"","th_th":"%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Cstrong%3E%E0%B8%A5%E0%B8%B8%E0%B9%89%E0%B8%99%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%A3%E0%B8%B2%E0%B8%87%E0%B8%A7%E0%B8%B1%E0%B8%A5%E0%B8%A1%E0%B8%B9%E0%B8%A5%E0%B8%84%E0%B9%88%E0%B8%B2%E0%B8%AA%E0%B8%B9%E0%B8%87%E0%B8%96%E0%B8%B6%E0%B8%87%20THB72%2C800%3C%2Fstrong%3E%26nbsp%3B%7C%20%E0%B8%8A%E0%B9%87%E0%B8%AD%E0%B8%9B%E0%B8%95%E0%B8%B1%E0%B9%89%E0%B8%87%E0%B9%81%E0%B8%95%E0%B9%88%E0%B8%A7%E0%B8%B1%E0%B8%99%E0%B8%97%E0%B8%B5%E0%B9%88%201%20-%2030%20%E0%B8%9E.%E0%B8%A2.%E0%B8%99%E0%B8%B5%E0%B9%89%20%E0%B8%9C%E0%B8%B9%E0%B9%89%E0%B8%97%E0%B8%B5%E0%B9%88%E0%B8%A1%E0%B8%B5%E0%B8%A2%E0%B8%AD%E0%B8%94%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B8%AA%E0%B8%B9%E0%B8%87%E0%B8%AA%E0%B8%B8%E0%B8%94%E0%B8%A1%E0%B8%B5%E0%B8%AA%E0%B8%B4%E0%B8%97%E0%B8%98%E0%B8%B4%E0%B9%8C%E0%B8%A5%E0%B8%B8%E0%B9%89%E0%B8%99%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%9C%E0%B8%A5%E0%B8%B4%E0%B8%95%E0%B8%A0%E0%B8%B1%E0%B8%93%E0%B8%91%E0%B9%8C%20Lenovo%20%E0%B8%A1%E0%B8%B9%E0%B8%A5%E0%B8%84%E0%B9%88%E0%B8%B2%E0%B8%96%E0%B8%B6%E0%B8%87%20THB72%2C800!%3C%2Fp%3E%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Ca%20href%3D%22%2Fth%2Flenovopro%2Fth%2Fsmbaccount%2Fgatekeeper%2Fshowpage%3FipromoID%3Dhellobar_02_lpro%22%20target%3D%22_self%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3E%E0%B8%AA%E0%B8%A1%E0%B8%B1%E0%B8%84%E0%B8%A3%E0%B8%9F%E0%B8%A3%E0%B8%B5%E0%B8%95%E0%B8%AD%E0%B8%99%E0%B8%99%E0%B8%B5%E0%B9%89%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E"},"id":"Pagec79ed265-1f1d-4ef0-a835-a01f68c16f25"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Page4d522eba-7bc7-466b-bfdf-c410e84ed9f5","language":{"th":"","en_th":"%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3ELenovo%20Education%20%7C%20Register%20to%20unlock%20THB3%2C800%20welcome%20discount%20%2B%20up%20to%2010%25%20EXTRA%20savings%26nbsp%3B%20%2B%2015%25%20off%20tablets.%3C%2Fp%3E%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Ca%20href%3D%22%2Fd%2Fschool-from-home%2F%3FipromoID%3DHellobar_03_edu_cat1%22%20target%3D%22_self%22%20textvalue%3D%22Shop%20Now%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3EShop%20Now%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%26nbsp%3B%7C%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22https%3A%2F%2Fwww.lenovo.com%2Fth%2Fedu%2Fthedu%2Fen%2Flogin%2Fedu%2F%3FipromoID%3DHellobar_03_edu_cat2%22%20target%3D%22_self%22%20textvalue%3D%22Join%20Lenovo%20Education%26nbsp%3B%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3EJoin%20Lenovo%20Education%3C%2Fstrong%3E%3Cstrong%3E%26nbsp%3B%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E","en":"","th_th":"%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3ELenovo%20Education%26nbsp%3B%3C%2Fspan%3E%20%7C%20%E0%B8%A5%E0%B8%87%E0%B8%97%E0%B8%B0%E0%B9%80%E0%B8%9A%E0%B8%B5%E0%B8%A2%E0%B8%99%E0%B9%80%E0%B8%9E%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%AA%E0%B9%88%E0%B8%A7%E0%B8%99%E0%B8%A5%E0%B8%94%E0%B8%95%E0%B9%89%E0%B8%AD%E0%B8%99%E0%B8%A3%E0%B8%B1%E0%B8%9A%20THB3%2C800%2B%20%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%AB%E0%B8%A2%E0%B8%B1%E0%B8%94%E0%B8%9E%E0%B8%B4%E0%B9%80%E0%B8%A8%E0%B8%A9%2010%25%20%2B%2015%25%20%E0%B8%88%E0%B8%B2%E0%B8%81%E0%B9%81%E0%B8%97%E0%B9%87%E0%B8%9A%E0%B9%80%E0%B8%A5%E0%B9%87%E0%B8%95%3C%2Fp%3E%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Ca%20href%3D%22%2Fd%2Fschool-from-home%2F%3FipromoID%3DHellobar_03_edu_cat1%22%20target%3D%22_self%22%20textvalue%3D%22%E0%B9%80%E0%B8%A5%E0%B8%B7%E0%B8%AD%E0%B8%81%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B9%80%E0%B8%A5%E0%B8%A2%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3E%E0%B9%80%E0%B8%A5%E0%B8%B7%E0%B8%AD%E0%B8%81%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B9%80%E0%B8%A5%E0%B8%A2%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%26nbsp%3B%7C%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22https%3A%2F%2Fwww.lenovo.com%2Fth%2Fedu%2Fthedu%2Fen%2Flogin%2Fedu%2F%3FipromoID%3DHellobar_03_edu_cat2%22%20target%3D%22_self%22%20textvalue%3D%22%E0%B9%80%E0%B8%82%E0%B9%89%E0%B8%B2%E0%B8%A3%E0%B9%88%E0%B8%A7%E0%B8%A1%20Lenovo%20Education%26nbsp%3B%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3E%E0%B9%80%E0%B8%82%E0%B9%89%E0%B8%B2%E0%B8%A3%E0%B9%88%E0%B8%A7%E0%B8%A1%20Lenovo%20Education%26nbsp%3B%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E"},"id":"Page4d522eba-7bc7-466b-bfdf-c410e84ed9f5"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Page8b8d57c7-afec-43a0-aa27-0e094604310e","language":{"th":"","en_th":"%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22text-wrap%3A%20nowrap%3B%22%3EReady%2C%20set%2C%20grab%20your%20PC%20in%26nbsp%3B%20with%20Free%20shipping%20sitewide%2C%20no%20minimum%20Spend.%26nbsp%3B%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22text-wrap%3A%20nowrap%3B%22%3ECall%201800-011-936.%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%3Ca%20href%3D%22%2Fd%2Fdeals%2Fexpress%2F%3FipromoID%3Dhellobar_04_quickship%22%20target%3D%22_blank%22%20style%3D%22text-wrap%3A%20nowrap%3B%20color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22text-wrap%3A%20nowrap%3B%20color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3EShop%20Now%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fspan%3E%3C%2Fp%3E","en":"","th_th":"%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22text-wrap%3A%20nowrap%3B%22%3E%E0%B8%A3%E0%B8%B0%E0%B8%A7%E0%B8%B1%E0%B8%87%20%E0%B9%80%E0%B8%95%E0%B8%A3%E0%B8%B5%E0%B8%A2%E0%B8%A1%E0%B8%95%E0%B8%B1%E0%B8%A7%20%E0%B8%84%E0%B8%A7%E0%B9%89%E0%B8%B2%E0%B8%9E%E0%B8%B5%E0%B8%8B%E0%B8%B5%E0%B8%82%E0%B8%AD%E0%B8%87%E0%B8%84%E0%B8%B8%E0%B8%93%20%E0%B8%88%E0%B8%B1%E0%B8%94%E0%B8%AA%E0%B9%88%E0%B8%87%E0%B8%9F%E0%B8%A3%E0%B8%B5%E0%B8%97%E0%B8%B8%E0%B8%81%E0%B8%84%E0%B8%B3%E0%B8%AA%E0%B8%B1%E0%B9%88%E0%B8%87%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%20%E0%B9%84%E0%B8%A1%E0%B9%88%E0%B8%A1%E0%B8%B5%E0%B8%A2%E0%B8%AD%E0%B8%94%E0%B8%82%E0%B8%B1%E0%B9%89%E0%B8%99%E0%B8%95%E0%B9%88%E0%B8%B3%26nbsp%3B%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22text-wrap%3A%20nowrap%3B%22%3E%E0%B9%82%E0%B8%97%E0%B8%A3%201800-011-936%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%26nbsp%3B%3Ca%20href%3D%22%2Fd%2Fdeals%2Fexpress%2F%3FipromoID%3Dhellobar_04_quickship%22%20target%3D%22_blank%22%20textvalue%3D%22%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B9%80%E0%B8%A5%E0%B8%A2%22%20style%3D%22text-wrap%3A%20nowrap%3B%20color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22text-wrap%3A%20nowrap%3B%20color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3E%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B9%80%E0%B8%A5%E0%B8%A2%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fspan%3E%3C%2Fp%3E"},"id":"Page8b8d57c7-afec-43a0-aa27-0e094604310e"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Page347c5c30-01df-4d65-b1b4-4676f472b89d","language":{"th":"","en_th":"%3Cp%3E%3Cspan%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3EYoga%20Slim%207i%20(14%26%2339%3B%26%2339%3B%2C%20Gen%209)%7CUnlock%20seamless%20AI-powered%20creativity%20with%20Intel%C2%AE%20Core%E2%84%A2%20Ultra%20processors%20in%20a%20thin%2C%20light%20design%20with%20epic%20battery%20life.%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fp%2Flaptops%2Fyoga%2Fyoga-slim-series%2Fyoga-slim-7i-gen-9-aura-edition-15-inch-intel%2Flen101y0051%3FipromoID%3Dhellobar_05_Yoga_Slim_7i_Gen_9%22%20target%3D%22_self%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3EShop%20Now%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E","en":"","th_th":"%3Cp%3E%3Cspan%20style%3D%22text-wrap-mode%3A%20wrap%3B%22%3EYoga%20Slim%207i%20(14%26%2339%3B%26%2339%3B%2C%20Gen%209)%7C%E0%B8%9B%E0%B8%A5%E0%B8%94%E0%B8%A5%E0%B9%87%E0%B8%AD%E0%B8%84%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%84%E0%B8%B4%E0%B8%94%E0%B8%AA%E0%B8%A3%E0%B9%89%E0%B8%B2%E0%B8%87%E0%B8%AA%E0%B8%A3%E0%B8%A3%E0%B8%84%E0%B9%8C%E0%B8%97%E0%B8%B5%E0%B9%88%E0%B8%82%E0%B8%B1%E0%B8%9A%E0%B9%80%E0%B8%84%E0%B8%A5%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%99%E0%B8%94%E0%B9%89%E0%B8%A7%E0%B8%A2%20AI%20%E0%B9%84%E0%B8%94%E0%B9%89%E0%B8%AD%E0%B8%A2%E0%B9%88%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%B2%E0%B8%9A%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%99%E0%B8%94%E0%B9%89%E0%B8%A7%E0%B8%A2%E0%B8%82%E0%B8%B8%E0%B8%A1%E0%B8%9E%E0%B8%A5%E0%B8%B1%E0%B8%87%20Intel%C2%AE%20Core%E2%84%A2%20Ultra%20%E0%B8%97%E0%B8%B5%E0%B9%88%E0%B8%94%E0%B8%B5%E0%B9%84%E0%B8%8B%E0%B8%99%E0%B9%8C%E0%B8%9A%E0%B8%B2%E0%B8%87%E0%B9%80%E0%B8%9A%E0%B8%B2%E0%B8%9E%E0%B8%A3%E0%B9%89%E0%B8%AD%E0%B8%A1%E0%B8%AD%E0%B8%B2%E0%B8%A2%E0%B8%B8%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B9%83%E0%B8%8A%E0%B9%89%E0%B8%87%E0%B8%B2%E0%B8%99%E0%B9%81%E0%B8%9A%E0%B8%95%E0%B9%80%E0%B8%95%E0%B8%AD%E0%B8%A3%E0%B8%B5%E0%B9%88%E0%B8%97%E0%B8%B5%E0%B9%88%E0%B8%A2%E0%B8%B2%E0%B8%A7%E0%B8%99%E0%B8%B2%E0%B8%99%26nbsp%3B%20%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fp%2Flaptops%2Fyoga%2Fyoga-slim-series%2Fyoga-slim-7i-gen-9-aura-edition-15-inch-intel%2Flen101y0051%3FipromoID%3Dhellobar_05_Yoga_Slim_7i_Gen_9%22%20target%3D%22_self%22%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%22%3E%3Cstrong%3E%E0%B8%8B%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B9%80%E0%B8%A5%E0%B8%A2%3C%2Fstrong%3E%3Cstrong%3E%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E"},"id":"Page347c5c30-01df-4d65-b1b4-4676f472b89d"},"gInfo":""}],"autoRun":true,"displayTerminal":"pc,tablet,mobile"}
 


Why is the exclamation mark important in programming?

In programming, the exclamation mark serves various purposes and has specific applications. It can represent logical operations, act as part of programming syntax, or indicate special functionality within programming languages.

How is the exclamation mark used as a logical operator in programming?

When used as a logical operator, the exclamation mark typically represents the logical NOT operation. It allows you to reverse the truth value of a condition. For example, if a condition is evaluated to true, applying the exclamation mark will make it false, and vice versa.

How is the exclamation mark utilized in command-line interfaces (CLIs) and shell scripting?

In CLIs and shell scripting, the exclamation mark, also known as the "bang" character, represents command history substitution. It allows you to recall and execute previously executed commands quickly.

Can I use an exclamation mark in a text message or instant message?

Yes, you can use an exclamation mark in text messages or instant messages to emphasize or convey emotions. In fact, since written communication lacks the tone of voice and facial expressions found in face-to-face conversations, using exclamation marks can help convey your intended meaning more clearly.

Is there any difference between an exclamation mark and an exclamation point?

No, there is no difference between an exclamation mark and an exclamation point. Both terms refer to the same punctuation symbol, which is represented by the character "!". The choice between "mark" and "point" is a matter of preference or regional usage.

Can I use an exclamation mark in programming code?

Yes, exclamation marks have different uses in programming languages. In some programming languages, like Perl, an exclamation mark can represent the logical NOT operator. It negates the value of a Boolean expression. In regular expressions, an exclamation mark can be used to indicate negation or to match any character except the specified ones.

What happens if I forget to use an exclamation mark in my regular expression pattern?

If you forget to use an exclamation mark in your regular expression pattern, the pattern will match any string that contains the specified characters or sequence of characters. The exclamation mark is essential to indicate negation and change the pattern's meaning.

Are there any conventions for using an exclamation mark in domain names or uniform resource locator (URLs)?

Yes, there are conventions for using an exclamation mark in domain names or URLs. The exclamation mark is not a valid character in domain names, so it cannot be used directly. However, in some web applications or frameworks, the exclamation mark can be used as part of a URL structure to represent a specific action or state. This convention is known as the "hashbang" or "shebang" syntax.

Can an exclamation mark affect the meaning of a command in a programming language?

In some programming languages, an exclamation mark can affect the meaning of a command or function call. For example, in Unix-based systems, adding an exclamation mark before a command in the shell (e.g., "!ls") executes the previous instance of that command from the command history. In other programming languages or frameworks, an exclamation mark may be used as a prefix to indicate a specific operation or modification.

What should I do if I receive a message with excessive exclamation marks?

If you receive a message with excessive exclamation marks, it's important to consider the context and the relationship with the sender. While excessive exclamation marks can sometimes be perceived as enthusiasm or excitement, they can also come across as aggressive or overbearing. If you find it off-putting, consider responding in a neutral tone or ask the sender to clarify their message without the excessive use of exclamation marks.

Can an exclamation mark change the tone of a sentence?

Yes, an exclamation mark can change a sentence's tone. It can transform a statement into an exclamation, adding enthusiasm, surprise, urgency, or even anger, depending on the context. For example, the sentence "That's interesting" conveys a neutral tone, but "That's interesting!" with an exclamation mark indicates excitement or intrigue.

Is there a limit to the number of exclamations marks I can use?

There is no specific limit to the number of exclamations marks you can use, but it's generally recommended to use them sparingly. Using multiple exclamation marks in a row, such as "Wow!!!" or "I can't believe it!!!!," can be seen as excessive and may diminish their impact. It's best to reserve the use of exclamation marks for situations where you want to convey genuine excitement or urgency.

Can I use an exclamation mark in an email subject line?

Yes, you can use an exclamation mark in an email subject line to add emphasis or catch the recipient's attention. However, it's important to use them judiciously, as an excessive use of exclamation marks in a subject line may make your email appear spammy or unprofessional. It's best to reserve the use of exclamation marks for subject lines that genuinely require emphasis or urgency.

Are there any situations where using an exclamation mark is inappropriate?

Yes, there are situations where using an exclamation mark can be considered inappropriate. In formal or professional writing, such as academic papers, business correspondence, or legal documents, excessive use of exclamation marks is generally discouraged. Additionally, in situations where a calm and composed tone is required, using exclamation marks may be seen as unprofessional or inappropriate.

Can an exclamation mark convey sarcasm or irony?

Yes, an exclamation mark can be used to convey sarcasm or irony in written communication. By using an exclamation mark after a statement that is meant to be sarcastic or ironic, you can emphasize the intended meaning and add a touch of humor. However, it's important to use them carefully to ensure that your intended sarcasm or irony is conveyed clearly and not misconstrued.

How does the exclamation mark play a role in communication protocols, such as simple mail transfer protocol (SMTP) and internet relay chat (IRC)?

In communication protocols like SMTP and IRC, the exclamation mark often signifies the separation between the command and its parameters. It helps distinguish the specific actions or requests made within the protocol.

{"pageComponentDataId":"f2a97040iaf38-4268-8aa4-dd300dbb82b5","isAssociatedRelease":"true","pageComponentDataLangCode":"en_th","configData":{"jumpType":"currentTab","headlineColor":"black","displayNumber":"","styleMode":"vertical","miniCardHoMode":"2","headline":"","products":[{"number":{"t_id":"len101t0102","language":{"th":"","en_th":"len101t0102","en":"","th_th":"len101t0102"},"id":"Page7e482a24-5af5-4d33-86a4-3471790a1816"}},{"number":{"t_id":"len101t0104","language":{"th":"","en_th":"len101t0104","en":"","th_th":"len101t0104"},"id":"Page45f8851e-4b9b-44a0-ab20-7facb007acf4"}},{"number":{"t_id":"len101t0081","language":{"th":"","en_th":"len101t0081","en":"","th_th":"len101t0081"},"id":"Pagedc7cb422-7f94-44a3-88ce-f9e3a06ffc33"}},{"number":{"t_id":"len101g0036","language":{"th":"","en_th":"len101g0036","en":"","th_th":"len101g0036"},"id":"Pageb7e97ced-9d08-43f3-8c2e-62151abf86af"}}]},"urlPrefix":"AAAAAAALAAAE","needGetLatestTransDataKey":"needGetLatestTransDataValue","title":"glossary-right-blue-boxes-fragment","pageId":"8e408484-13ce-4c08-8240-4640f5264241","urlEdit":0,"uri":"/FragmentDirectory/glossary/glossary-right-blue-boxes-fragment.frag","pageComponentId":"f2a97040iaf38-4268-8aa4-dd300dbb82b5","tplId":"c7389f9a-59c0-4c34-a9e1-f1c090c6ab86","pageComponentUuid":"f2a97040iaf38-4268-8aa4-dd300dbb82b5","targetUser":"0"}
coming coming
Starting at
List Price
Est Value
Web Price:
List Price
Est Value (Estimated Value)
List Price is Lenovo’s estimate of product value based on the industry data, including the prices at which first and third-party retailers and etailers have offered or valued the same or comparable products. Third-party reseller data may not be based on actual sales.
Estimated value is Lenovo’s estimate of product value based on industry data, including the prices at which Lenovo and/or third-party retailers and e-tailers have offered or valued the same or comparable products. Third-party data may not be based on actual sales.
Learn More
See More
See Less
View {0} Model
View {0} Models
shipping.options.for.{0}
Part Number:
Features
See More
See Less
compare
Added!
Great choice!
You may compare up to 4 products per product category (laptops, desktops, etc). Please de-select one to add another.
View Your Comparisons
Add To Cart
Add To Cart
We're sorry,
Products are temporarily unavailable.
Continue Shopping
Learn More
Coming Soon
Featured Product
Featured Products
Oops! No results found. Visit the categories above to find your product.
Save
open in new tab
© 2024 Lenovo. All rights reserved.
© {year} Lenovo. All rights reserved.
Compare  ()
x