A_141128_MatricesProducto, C (gcc)

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//Title of this code

#include  <stdio.h>
#include <stdlib.h>
#include <time.h>

#define _FA 4
#define _CA 5
#define _FB _CA
#define _CB 6
#define _FM _FA
#define _CM _CB

int main(void)
{
    long A[_FA][_CA];
    long B[_FB][_CB];
    long M[_FM][_CM];
    
    
    
    short f, c, k;
    
    for(srand(time(NULL)) , f = 0 ; f < _FA ; f++)
    {
        for(c = 0 ; c < _CA ; c++)
        {
            A[f][c] = rand() % 10;
        }
    }

for(f = 0 ; f < _FB ; f++)
    {
        for(c = 0 ; c < _CB ; c++)
        {
            B[f][c] = rand() % 10;
        }
    }    
    
    for(f = 0 ; f < _FM ; f++)
    {
        for(c = 0 ; c < _CM ; c++)
        {
            M[f][c] = 0;
            for(k = 0 ; k < _CA ; k++)
            {
                M[f][c] += A[f][k] * B[k][c];
            }
        }
    }
    
    for(f = 0 ; f < _FA ; f++)
    {
        for(c = 0 ; c < _CA ; c++)
        {
            printf("%3ld", A[f][c]);
        }
        printf("\n");
    }
    printf("\n\n\n");
    for(f = 0 ; f < _FB ; f++)
    {
        for(c = 0 ; c < _CB ; c++)
        {
            printf("%3ld", B[f][c]);
        }
        printf("\n");
    }
    printf("\n\n\n");
    for(f = 0 ; f < _FM ; f++)
    {
        for(c = 0 ; c < _CM ; c++)
        {
            printf("%5ld", M[f][c]);
        }
        printf("\n");
    }
    printf("\n\n\n");

return 0;
}

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Compilation time: 0.22 sec, absolute running time: 0.14 sec, cpu time: 0 sec, memory peak: 3 Mb, absolute service time: 0.37 sec