C /C++ Program for Multiplication of Two Matrices, C /C++ Program to enter elements of integer array & display its Multiplication, C or C++ Program to display numbers with the help of array & show its Multiplication
Program
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,k,r1,c1,r2,c2,a[10][10], b[10][10], c[10][10];
clrscr();
printf("Enter the rows & column of 1st matrices:\n");
scanf("%d %d",&r1, &c1 );
printf("\nEnter the rows & column of 2nd matrices:\n");
scanf("%d %d",&r2, &c2);
if(c1==r2)
{
printf("\nMatrices multiplication is possible\n");
}
else
{
printf("\nMatrices multiplication is not possible\n");
exit(0);
}
printf("\nEnter the first matrices\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("\nFirst Matrices is:\n");
for(i=0;i<r1;i++)
{
printf("\n");
for(j=0;j<c1;j++)
{
printf("%d\t",a[i][j]);
}
}
printf("\n");
printf("\nEnter second matrices\n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
{
scanf("%d",&b[i][j]);
}
}
printf("\nSecond matrices is:\n");
for(i=0;i<r2;i++)
{
printf("\n");
for(j=0;j<c2;j++)
{
printf("%d\t",b[i][j]);
}
}
printf("\n");
printf("\nMatrices multiplication is\n");
for(i=0;i<r1;i++)
{
printf("\n");
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]);
}
}
}
for(i=0;i<r1;i++)
{
printf("\n");
for(j=0;j<c2;j++)
{
printf("%d\t",c[i][j]);
}
}
getch();
}
Changes for C++
If you want to write the same program in c++ apply the following changes to the program.
1.) change the header file from "#include<stdio.h>" to "#include<iostream>.h"
2.) for input & output use "cout<<" & "cin>>" instead of "printf" & "scanf".
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