dynamic allocation of 2-dimension array

#include "stdafx.h"
#include <cstdio>
 
using namespace std;
 
int main() {
    int ** tmp;
    tmp = new int *[10];
    for (int i = 0; i < 10; i++) {
        tmp[i] = new int[10];
    }
    for (int i = 0; i < 10; i++) {
        for (int j = 0; j < 10; j++) {
            tmp[i][j] = i + j;
        }
    }
    for (int i = 0; i < 10; i++) {
        for (int j = 0; j < 10; j++) {
            printf("%d ", tmp[i][j]);
        }
        printf("\n");
    }
    while (1) {}
    return 0;
}