Multiplication Table

#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    int a[100][100];

    int num = 0;
    cout<<"Multiplication Table"<<endl;
    cout<<"Input the no. of rows and columns: ";
    cin>>num;
    cout<<endl;
    for(int i=1;i<=num;i++){
        for(int j=1;j<=num;j++){
                a[i][j] = (i)*(j);
                cout<< setw(5) << right <<a[i][j]<<"   ";
        }
        cout<<endl;
    }

    return 0;
}