Code:
#include<stdio.h>
int main(){
  int a[5][5],b[5][5],c[5][5],i,j,k,sum=0,m,n,o,p;
  printf("\nEnter the row and column of first matrix");
  scanf("%d %d",&m,&n);
  printf("\nEnter the row and column of second matrix");
  scanf("%d %d",&o,&p);
  if(n!=o){
      printf("Matrix mutiplication is not possible");
      printf("\nColumn of first matrix must be same as row of second matrix");
  }
  else{
      printf("\nEnter the First matrix->");
      for(i=0;i<m;i++)
      for(j=0;j<n;j++)
           scanf("%d",&a[i][j]);
      printf("\nEnter the Second matrix->");
      for(i=0;i<o;i++)
      for(j=0;j<p;j++)
           scanf("%d",&b[i][j]);
      printf("\nThe First matrix is\n");
      for(i=0;i<m;i++){
      printf("\n");
      for(j=0;j<n;j++){
           printf("%d\t",a[i][j]);
      }
      }
      printf("\nThe Second matrix is\n");
      for(i=0;i<o;i++){
      printf("\n");
      for(j=0;j<p;j++){
           printf("%d\t",b[i][j]);
      }       
      }
      for(i=0;i<m;i++)
      for(j=0;j<p;j++)
           c[i][j]=0;
      for(i=0;i<m;i++){ //row of first matrix
      for(j=0;j<p;j++){  //column of second matrix
           sum=0;
           for(k=0;k<n;k++)
               sum=sum+a[i][k]*b[k][j];
           c[i][j]=sum;
      }
      }
  }
  printf("\nThe multiplication of two matrix is\n");
  for(i=0;i<m;i++){
      printf("\n");
      for(j=0;j<p;j++){
           printf("%d\t",c[i][j]);
      }
  }
  return 0;
}
__________________________________________________ __________________
Code:
#include
#include

void main()
{
int H1[4][4],H2[4][4],H3[4][4],R1,R2,C1,C2,I,J,K;
clrscr();
printf("\t\t PROGRAM FOR MULTIPLICATION OF TWO MATRICES");
printf("\n ENTER THE NUMBER OF ROW OF FIRST MATRIX : - ");
scanf("%d",&R1);
printf("\n ENTER THE NUMBER OF COLOMN OF FIRST MATRIX :- ");
scanf("%d",&C1);
printf("\n ENTER THE NUMBER OF ROW OF SECOND MATRIX : - ");
scanf("%d",&R2);
printf("\n ENTER THE NUMBER OF COLOMN OF SECOND MATRIX : -");
scanf("%d",&C2);
if(C1!=R2)
{
printf("\n MULTIPLICATION IS NOT POSSIBLE ");
exit(0);
getch(); 
}
printf("\n ENTER THE ELEMENTS OF FIRST MATRIX : - \n");
for(I=1;I<=R1;I++)
{
for(J=1;J<=C1;J++)
{
scanf("\n %d", &H1[I][J]);
}
}
printf("\n ENTER THE ELEMENTS OF SECOND MATRIX : - \N");
for(I=1;I<=R2;I++)
{
for(J=1;J<=C2;J++)
{
scanf("\n %d", &H2[I][J]);
}
}
printf("\n THE FIRST MATRIX IS : -\n");
for(I=1;I<=R1;I++)
{
for(J=1;J<=C1;J++)
{
printf("\n %d", &H1[I][J]);
}
printf("\n");
}
printf("\n ENTER THE ELEMENTS OF SECOND MATRIX : - \N");
for(I=1;I<=R2;I++)
{
for(J=1;J<=C2;J++)
{
printf("\n %d", &H2[I][J]);
}
printf("\n");
}
printf(I=1;I<=R1;I++)
{
for(J=1;J<=C2;J++)
{
H3[I][J]=0;
for(K=1;K<=R1;K++)
{
H3[I][J] = H3[I][J] + (H1[I][K]*H2[K][J]);
}
}
}
printf("\n THE MULTIPLICATION OF ABOVE MATRICES IS : - \n");
for(I=1;I<=R1;I++)
{
for(J=1;J<=C2;J++)
{
printf("\t%d", H3[I][J]);
}
printf("\n");
}
getch();
}
__________________________________________________ __________________
Code:
#include<stdio.h>
#include<conio.h>
#define max 10
void main()
{
int a[max][max];
int a1[max][max];
int a2[max][max];
int i,j,n,m,k,l,e;
clrscr();
printf("\nEnter the number of rows of first matrix:");
scanf("%d",&n);
printf("\nEnter the number of columns of second matrix:");
scanf("%d",&m);
printf("\nEnter the elements of first matrix:\n");
for(i=0;i<n;i++)
for(j=0;j<m;j++)
scanf("%d",&a[i][j]);
printf("\nEnter the number of rows of second matrix:");//insertion of second matrix
scanf("%d",&k);
printf("\nEnter the number of columns of second matrix:");
scanf("%d",&l);
printf("\nEnter the elements of second matrix:\n");
for(i=0;i<k;i++)
for(j=0;j<l;j++)
scanf("%d",&a1[i][j]);
printf("\n First Matrix you entered:\n");//display of first matrix
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
printf("%d ",a[i][j]);
printf("\n");
}
printf("\n Second Matrix you entered:\n");
for(i=0;i<k;i++)
{
for(j=0;j<l;j++)
printf("%d ",a1[i][j]);
printf("\n");
}
for(i=0;i<n;i++)
{
for(j=0;j<k;j++)
{
a2[i][j]=0;
for(e=0;e<k;e++)
{
a2[i][j]=a2[i][j] + (a[i][e] * a1[e][j]);
}
}
}
printf("\n Multiplication of matrix is:\n");
for(i=0;i<n;i++)
{
for(j=0;j<l;j++)
printf("%d ",a2[i][j]);
printf("\n");
}
getch();
}