what is wrong!!

Question

#include <stdio.h>
int main() {
int i = 0;
return 0;
}

//It make Error at 'i'
//so i've changed variable name but can not fix it
https://code.sololearn.com/cH7Hy5on4kIa/?ref=app

Answer 1

It's a warning, not error.
You've created a variable but haven't used it anywhere
You can print its value if you want to, by -

printf("%d", i);