Question

Can someone tell me what's wrong with this?

Answer 1

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

void lerMatriz(int *mat, int m, int n)
{
// incremento do endereco contido na variavel auxiliar
int i, j;
for (i = 0; i < m; i = i + 1)
for (j = 0; j < n; j = j + 1) scanf("%d", &mat[i * n + j]);
}

void somarMatrizes(int *a, int *b, int *c, int m, int n)
{
int i, j, k;
for (i = 0; i < m; i = i + 1)
{
k = i * n;
for (j = 0; j < n; j = j + 1)
c[k + j] = a[k + j] + b[k + j];
}
}

void escreverMatriz(int *mat, int m, int n)
{
// base (mat) mais deslocamento (i * m + j)
int i, j, k;
for (i = 0; i < m; i = i + 1)
{
k = i * n;
for (j = 0; j < n; j = j + 1) printf("%3d", mat[k + j]);
printf("\n");
}
}

int main(void)
{
int m, n, *m1, *m2, *m3;
scanf("%d", &m);
scanf("%d", &n);
m1 = (int *)malloc(sizeof(int) * m * n);
m2 = (int *)malloc(sizeof(int) * m * n);
m3 = (int *)malloc(sizeof(int) * m * n);
lerMatriz(m1, m, n);
escreverMatriz(m1, m, n);
lerMatriz(m2, m, n);
escreverMatriz(m2, m, n);
printf("\n");
somarMatrizes(m1, m2, m3, m, n);
escreverMatriz(m3, m, n);
system("RETURN");
}

Answer 2

Seems to work just fine for me. I don't know what the system("RETURN") is doing there, though.

This is the exact code I was using: http://pastebin.com/FaW39mdS

Answer 3

thaank you. :))