/*A Program to Multiply Two Matrices. */

#include <stdio.h>
#define MAXROWS 100
#define MAXCOLS 100

void Read(int a[][MAXCOLS],int m,int n);
void Compute(int a[][MAXCOLS],int b[][MAXCOLS],int c[][MAXCOLS],int m,int n,int p);
void Print(int c[][MAXCOLS],int m,int p);

void main()
{

    int nrows, ncols, mrows, mcols;
    int a[MAXROWS][MAXCOLS],b[MAXROWS][MAXCOLS],c[MAXROWS][MAXCOLS];
    
    printf("Enter Number Of Rows In Matric A: ");
    scanf("%d",&nrows);
    
    printf("Enter Number Of Rows In Matric A: ");
    scanf("%d",&ncols);
    
    printf("Enter Number Of Rows In Matric B: ");
    scanf("%d",&mrows);
    
    printf("Enter Number Of Rows In Matric B: ");
    scanf("%d",&mcols);
    
    if (ncols != mrows)
    {
        printf("\n\t\tSorry! You Can"t Multiply Matric A And B.");
        getch();
exit(0);
    }

    printf("\n\t\t\tFirst Matric\n");
    Read(a,nrows,ncols);
    
    printf("\n\t\t\tSecond Matric\n");
    Read(b,mrows,mcols);
    
    Compute(a,b,c,nrows,ncols,mcols);
    
    printf("Product Of The Matrices Is:");
    Print(c,nrows,mcols);
    
    getch();
}


void Read(int a[][MAXCOLS],int m,int n)
{
    int row, col;
    for (row=0;row<m;row++)
    {   
        printf("Enter Data For Row No.%d:\n",row+1);
        
        for (col=0;col<n;col++)
            scanf("%d",&a[row][col]);
    }
return;
}


void Compute(int a[][MAXCOLS],int b[][MAXCOLS],int c[][MAXCOLS],int m,int n,int p)
{
    int i, j, k, sum=0;
    
    for (i=0;i<m;i++)
    {
        for (j=0;j<p;j++)
        {
            for (k=0;k<n;k++)
            {
                sum=sum+(a[i][k]*b[k][j]);
                c[i][j]=sum;
                sum=0;
            }
        }
    }
return;
}


void Print(int c[][MAXCOLS],int m,int p)
{
    int row, col;
    printf("\n");
    for (row=0;row<m;row++)
    {
        for (col=0;col<p;col++)
        {
            printf("%5d",c[row][col]);
            printf("\t");
        }
        printf("\n");
    }
return;
}