Question

Hello I need some help with creating a function in c++

It has to be an Two-Dimensional array put in a function

and it basically should output 20 rows and 20 columns

if anyone can provide explanation it would be great

Answer 1

#include <iostream>

using namespace std;

void generate_2d() {
    int arr[20][20];    // generate a 2D array
    for (int i = 0; i < 20; ++i) {  // go through all rows
        for (int j = 0; j < 20; ++j) {  // go through all columns of each row
            arr[i][j] = i * j;    // storing some value in each array element
        }
    }
    // Now, let's print the array
    for (int i = 0; i < 20; ++i) {  // go through all rows
        for (int j = 0; j < 20; ++j) {  // go through all columns of each row
            cout << arr[i][j] << "\t";   // print the element
        }
        cout << endl;   // print a newline after each row
    }
}

int main() {
    generate_2d();
    return 0;
}