Array error

Question

#include <stdio.h>

int main()
{

int n;
printf("Introduce el número de elementos: ");
scanf("%d",&n);
int mat[n];
return 0;
}

Why doesn"t this code accept 'mat' array?
In other compilers accept it.

Answer 1

because it is unused. The compiler is throwing warning because it wants to tell you that if you are not going to use a variable/array then why are you even declaring it ?🤔🤔

either use that array or remove it.

Answer 2

It's not error. It's a warning. Manuel Rondón

Answer 3

Jayakrishna🇮🇳
yeah correct!

Answer 4

I mean in other compilers no warning no error.

Answer 5

May be, there others disabled warnings in settings.. And It has no errors.