Question

1) Implement a C program that multiplies two matrices with dimension n x m and m x r (n, m, r are provided by the user as argument to the main function. The elements of the matrix are generated randomly. Test the program.

example: matmult 2 3 4 will multiply two matrices of dimensions 2 x 3 and 3 x 4, the elements are generated randomly.

2) Determine the highest dimension(s) for which the program will crash

3) Please Explain the solution do you propose to solve this problem?

Answer 1

#source code:

#include <stdio.h>

#include <stdlib.h>

int main(){

printf("Enter n,m,r values and give space between:");

int n,m,r;

scanf("%d %d %d",&n,&m,&r);

int a[n][m],b[m][r];

for(int i=0;i<n;i++){

for(int j=0;j<m;j++){

a[i][j]=rand()%50;

}

}

for(int i=0;i<m;i++){

for(int j=0;j<r;j++){

b[i][j]=rand()%50;

}

}

int c[n][r];

for(int i=0;i<n;i++){

for(int j=0;j<r;j++){

c[i][j]=0;

}

}

for(int i=0;i<n;i++) {

for (int j=0;j<r;j++) {

for(int k=0;k<m;k++) {

c[i][j]+=a[i][k]*b[k][j];

}

}

}

for(int i=0;i<n;i++){

for(int j=0;j<r;j++){

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

}

printf("\n");

}

return 0;

}

#output:

user@user-Latitude - 3490:-/Desktops gcc 1.C -0 samp user@user-Latitude - 3490:-/Desktop$ ./samp Enter n,m,r values and give space between:2 3 4 1971 3060 4137 1719 1511 2701 3855 1612 user@user-Latitude - 3490:-/Desktops |

#if you have any doubt or more information needed comment below..i will respond as possible as soon..thanks...