c++ - Traversing a multi array with pointers -
for ( j = 0; j < d1; j++ ){ m += j; ( = 0; < d1*d2; +=d2){ cout << *(m+i); } cout << endl; } d1,d2 array dimensions and int* m = new int [d1*d2]; i want traverse on array , group , print columns.can't figure what's wrong code.seems working fine untill 3rd iteration in following example: let's input values 1 2 3 4 5 6 7 8 9 i get: 1 4 7 2 5 8 4 7 (something random) in m += j; you first incrementing m 0, one, 2. if took copy int *start = m; then in first iteration of outer loop, we'd have m == start in second, m == start + 1 in third m == start + 3 you'd want m == start + 2 there. except want keep m in order delete @ end, shouldn't change m @ use like for ( j = 0; j < d2; j++ ){ ( = j; < d1*d2; +=d2){ cout << *(m+i); } cout << endl; }
