C Program to Multiply two Matrices with Input

#include <stdio.h>

#include <conio.h>

void main()

{

    int a[10][10],b[10][10],p[10][10];

    int i,j,k;

    int r1,c1,r2,c2;

    AGAIN: printf("For 1st matrix, Enter row and column:: ");

    scanf("%d%d",&r1,&c1);

    printf("\nFor 2nd matrix, Enter row and column:: ");

    scanf("%d%d",&r2,&c2);

    /*if column of 1st matrix is not equal to row of 1st matrix, enter again*/

    if(c1!=r2)

    {

        printf("Matrix order mismatch\n");

        goto AGAIN;

    }

    /*entering elements of 1st matrix*/

    printf("For 1st matrix(%d*%d)\n",r1,c1);

    for(i=0;i<r1;i++)

        for(j=0;j<c1;j++)

            scanf("%d",&a[i][j]);

    

    /*entering elements of 2nd matrix*/

    printf("For 2nd matrix(%d*%d)\n",r2,c2);

    for(i=0;i<r2;i++)

        for(j=0;j<c2;j++)

            scanf("%d",&b[i][j]);

    /*initializing product matrix p to zero(0)*/

    for(i=0;i<r1;i++)

        for(j=0;j<c2;j++)

            p[i][j]=0;

    /*multiplying the matrices*/

    printf("Matrix multiplication is: \n");

    for(i=0;i<r1;i++)

        for(j=0;j<c2;j++)

            for(k=0;k<r2;k++)

                p[i][j]+=a[i][k]*b[k][j];

    /*displaying the product matrix*/

    for(i=0;i<r1;i++)

    {

        for(j=0;j<c2;j++)

            printf("%d ",p[i][j]);

        printf("\n");

    }

    getch();

}

OUTPUT:

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