Using strtoul : convert from string « Data Types « C++ Tutorial

1. C++ Tutorial
2. Data Types
3. convert from string

#include <iostream>
using std::cout;
using std::endl;

#include <cstdlib> // strtoul prototype
using std::strtoul;

int main()
{
   unsigned long x;
   const char *string1 = "1234567abc";
   char *remainderPtr;

    x = strtoul( string1, &remainderPtr, 0 );

   cout << x << "  "<< x - 567 << endl;
   return 0;
}

1234567  1234000