Question

How to compact a randomly space a 2d array in c++? May you write comments please.

Answer 1

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

int main() {
    int rows = 10, cols = 10;
    int arr[10][10];
    // generate random array
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < cols; ++j) {
            arr[i][j] = rand() % 1000;
        }
    }
    // print random array
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < cols; ++j) {
            cout << arr[i][j] << "\t";
        }
        cout << endl;
    }
    return 0;
}