Using an output string stream is a handy way to convert a number to a string.
However, what if you want to zero pad the number.
Well, that’s where iomanip comes in handy.
[code language="cpp"]
#include <iomanip> // for setw, setfill
#include <iostream> // for cout
#include <sstream> // for ostringstream
#include <string> // for string
using namespace std;
int main ()
{
int i = 1;
ostringstream ss;
ss << setw( 3 ) << setfill( '0' ) << i;
string s = ss.str();
cout << "i: " << i << endl;
cout << "s: " << s << endl;
return 0;
}
[/code]
output:
[bash]
i: 1
s: 001
[/bash]
