int intToHexStr(char *, unsigned int)
{
  //how do I reference the first argument?
  //and how do I reference the second argument?
}

#include <iostream>
using namespace std;
 
int func1(char *, unsigned int); //prototype, note the semicolon at end
 
int main( )
{
     char str[256] = "";
     int num = 3;
     int ret_val = 0;
 
     ret_val = func1( str, num );
 
     return 0;
}
 
int func1(char * foo, unsigned int bar) //parameter names here
{
      strcpy( foo, "hello" );
      for( int i = 0; i < bar; i++ )
          strcat( foo, " world" );
      return strlen( foo );
}