#include <stdio.h>
 
void copyMatrix(int (*dst)[3], int (*src)[3], int rows) {
    for (int i = 0; i < rows; i++)
        for (int j = 0; j < 3; j++)
            dst[i][j] = src[i][j];
}
 
int main(void) {
    int a[2][3] = {{1, 2, 3}, {4, 5, 6}};
    int b[2][3] = {0};
 
    copyMatrix(b, a, 2);
 
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 3; j++) {
            printf("%d ", b[i][j]);
        }
        printf("\n");
    }
    return 0;
}
 

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