C PROGRAMMING

# write a c program to multiply two matrix

# C program to multiply two matrices?

` #include <stdio.h>`

#include <conio.h>

main()

{

int i, j, k;

int rows1, cols1, rows2, cols2, res_rows, res_cols;

int mat1[5][5], mat2[5][5], res[5][5];

printf("n Enter the number of rows in the first matrix : ");

scanf("%d",&rows1);

printf("n Enter the number of columns in the first matrix : ");

scanf("%d",&cols1);

printf("n Enter the number of rows in the second matrix : ");

scanf("%d",&rows2);

printf("n Enter the number of columns in the second matrix : ");

scanf("%d",&cols2);

if(cols1 != rows2)

{

printf("n The number of columns in the first matrix must be equal to the number of rows in the second matrix");

getch();

exit(0);

}

res_rows = rows1;

res_cols = cols2;

printf("n Enter the elements of the first matrix ");

for(i=0;i<rows1;i++)

{

for(j=0;j<cols1;j++)

{

scanf("%d",&mat1[i][j]);

}

}

printf("n Enter the elements of the second matrix ");

for(i=0;i<rows2;i++)

{

for(j=0;j<cols2;j++)

{

scanf("%d",&mat2[i][j]);

}

}

for(i=0;i<res_rows;i++)

{

for(j=0;j<res_cols;j++)

{

res[i][j]=0;

for(k=0; k<res_cols;k++)

res[i][j] += mat1[i][k] * mat2[k][j];

}

}

printf("n The elements of the product matrix are n");

for(i=0;i<res_rows;i++)

{

printf("n");

for(j=0;j<res_cols;j++)

printf("t %d",res[i][j]);

}

getch();

}