Add leading zero's to string, without (s)printf

Question

I want to add a variable of leading zero\'s to a string. I couldn\'t find anything on Google, without someone mentioning (s)printf, but I want to do this without (s)printf.<

Answer 1

The C++ way of doing it is with setw, ios_base::width and setfill

#include 
#include 

using namespace std;

int main()
{
    const int a = 12;
    const int b = 6;

    cout << setw(width) << row * col;
    cout << endl;

    return 0;
}