/*Develop functions
a)To read a given matrix
b)To output a matrix
c)To compute the product of two matrices
use the above developed functions to read int two matrices A(m*n)
and B(p*q), to compute the product of te input matrices, to output the
given matrices and the computed product matrix in a main function.
*/
#include<stdio.h>
#include<math.h>
int main()
{
void input(int a[5][5],int m,int n);
void output(int a[5][5],int m,int n);
void pro(int a[5][5],int b[5][5],int c[5][5],int m,int n,int q);
int m,n,p,q,a[5][5],b[5][5],c[5][5];
printf("\n Enter the m and n size of the matrix a:\n");
scanf("%d%d",&m,&n);
printf("\n Enter the p and q size of the matrix b:\n");
scanf("%d%d",&p,&q);
if(n!=p)
printf("\n Multiplication is not possible\n");
else
{
printf("\n Enter the first matrix a");
input(a,m,n);
printf("\n Enter the second matrix b\n");
input(b,p,q);
pro(a,b,c,m,n,q);
printf("\n The first matrix a:\n");
output(a,m,n);
printf("\n The second matrix b\n");
output(b,p,q);
printf("\n The computed of two matrices:\n");
output(c,m,q);
}
return 0;
}
void input(int a[5][5],int m,int n)
{
int i,j;
for(i=0;i<m;i++)
for(j=0;j<n;j++)
scanf("%d",&a[i][j]);
}
void output(int a[5][5],int m,int n)
{
int i,j;
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
printf("%5d",a[i][j]);
printf("\n");
}
}
void pro(int a[5][5],int b[5][5],int c[5][5],int m,int n,int q)
{
int i,j,k;
for(i=0;i<m;i++)
for(j=0;j<q;j++)
{
c[i][j]=0;
for(k=0;k<n;k++)
c[i][j]=c[i][j]+a[i][k]*b[k][j];
}
}