Read online tutorials written in vs2019 c before without any problems don't know how to use what's the matter now is wrong display is the same error hope bosses answer

CodePudding user response:

But very simple printf can run successfully

CodePudding user response:

Are you sure you set up for the project, and include the stdio

CodePudding user response:

See screenshots, only more than 30 lines of code, all posted see

CodePudding user response:

This kind of question you'd better put the code posted


It is possible that header file contains errors

CodePudding user response:

I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10581430.html
I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10768339.html