Keep getting this compiling error [closed]

问题

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Closed 5 years ago.

When I compile, I keep getting this error.

mario.c:4:1: error: expected identifier or '('

I've tried changing things and then fixing them and changing other things and then fixing those but nothing seems to help. I'm new at this. Can anyone help?

#include <stdio.h>
#include <cs50.h>
int main(void);
{
int n;

    do 
   { 
    n = GetInt();
   }
    while (n=<0);
}

回答1:

Change

int main(void);  
              ^Remove the semicolon 

to

int main(void)  

and also change

while (n=<0);  

to

while (n <= 0);

来源：https://stackoverflow.com/questions/21914660/keep-getting-this-compiling-error