Matrix identity in C

#include<stdio.h>

int main(void)

{

//Create Matrix Identity

     int A[100][100],i,j; 

     for(i=0;i<5;i++)

     {

           for(j=0;j<5;j++)

           {

                 if(i==j)

                 {

                     A[i][j]=1;

                 }

                 else

                 {

                     A[i][j]=0;

                 }

           }

     }

//Print

    for(i=0; i<5; i++)

    {

        for(j=0; j<5; j++)

        {

        printf("\t %d",A[i][j]); 

        }

       printf("\n");

    }

}