C-PROGRAM/Matrix Multiplication at main · Krishna-Sen-Programming-World/C-PROGRAM · GitHub

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#include <stdio.h>

int main()
{
    printf("Enter The size of 1st matrix ");
    int a,b,aa,bb;
    scanf("%d%d",&a,&b);
    printf("Enter The size of 2nd matrix ");
    scanf("%d%d",&aa,&bb);
    if(a==bb)
    {
        int arr1[a][b],arr2[aa][bb],arr3[a][bb];
        printf("Enter The 1st matrix ");
        for (int i=0;i<a;i++)
        for (int j=0;j<b;j++)
        scanf("%d",&arr1[i][j]);

        printf("Enter The 2nd matrix ");
        for (int i=0;i<aa;i++)
        for (int j=0;j<bb;j++)
        scanf("%d",&arr2[i][j]);

        for (int i=0;i<a;i++)
        {
            for (int j=0;j<bb;j++)
            {
                int d=0;
                for (int k=0;k<b;k++)
                {
                    d=d+(arr1[i][k]*arr2[k][j]);
                }
                arr3[i][j]=d;
                d=0;
            }
        }
        printf(" The matrix After multiplication is\n");
        for (int i=0;i<a;i++)
        {
            for (int j=0;j<bb;j++)
            printf("%d ",arr3[i][j]);
            printf("\n");
        }
    }
    return 0;
}