C program to perform multiplication operation on two matrix
/******************************************************
C program to perform multiplication operation on two matrix
************************************************************/
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
void main()
{
int r1,r2,c1,c2,i,j,k, a[20][20],b[20][20],c[20][20];
printf("How many rows and columns for first matrix\n");
scanf("%d%d",&r1,&c1);
printf("How many rows and columns for first matrix\n");
scanf("%d%d",&r2,&c2);
printf("Enter array elements of first array \n");
if(c1!=r2)
exit(0); // if condition true compiler will come out from input terminal
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("Enter array elements of second array \n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
{
scanf("%d",&b[i][j]);
}
}
printf("First array is \n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
{
printf("%d\t",a[i][j]);
}
printf("\n");
}
printf("Second array is \n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
{
printf("%d\t",b[i][j]);
}
printf("\n");
}
printf("The multiplication of two matrices is \n");
for(i=0;i<r1;i++)
{
for(j=0;j<c2;j++)
{
c[i][j]=0;
for(k=0;k<c1;k++)
{
c[i][j]=c[i][j]+a[i][k]*b[k][j];
}
printf("%d\t",c[i][j]);
}
printf("\n");
}
}
How many rows and columns for first matrix
2 3
How many rows and columns for first matrix
3 2
Enter array elements of first array
1 2 3 4 5 6
Enter array elements of second array
1 2 3 4 5 6
First array is
1 2 3
4 5 6
Second array is
1 2
3 4
5 6
The multiplication of two matrices is
22 28
49 64
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