CodePudding user response:

 printf (" hello world \ n "); 

if no problem, it should be no refresh buffer, when you finished the program to look at, there should be the output

CodePudding user response:

Input is also useless

CodePudding user response:

refer to the second floor Zane__king response:

input also useless

It's no use input what do you mean?

CodePudding user response:

Code should be no problem, not just to create a project to try again

CodePudding user response:

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