double, long, int ==> string conversion

[mangoMan]

Hope someone can tell me how to convert from double, long and int to a string of a specified length. I also need to to pad the string with zeros.

[hk_mp5kpdw]

An example converting an int value:

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

int main()
{
    ostringstream ostr;
    string str;
    int iVal = 157;

    // Convert int value into string value with '0' padding to 7 places

    ostr << setw(7) << setfill('0') << iVal;
    str = ostr.str();

    // Output string

    cout << str << endl;

    return 0;
}

Output:

0000157