#include <time.h>
#include <stddef.h>
#include <iostream>
#include <string>
#include <ctime> 
#include <cstdlib>
 
using namespace std;
 
const string password("password");
 
int main() 
{ 
 
    string x;
 
    cout << "Type the password to gain access to the program: ";
    cin >> x;
    if(x==password){
                    cin.clear();
        system("cls");
 
    int num2 = 0;
    srand((unsigned)time(0)); 
    int random_integer; 
    int lowest=1, highest=10; 
    int range=(highest-lowest)+1; 
    for(int index=0; index<2; index++){ 
        random_integer = lowest+int(range*rand()/(RAND_MAX + 1.0)); 
   }
 
   num2 = random_integer;
 
   if (num2 == 1)
   { 
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1221344450654.jpg\"");
           }
 
              if (num2 == 2)
   {
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1232073306448.jpg\"");
           }
 
              if (num2 == 3)
   {
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1232073519518.jpg\"");
           }
 
              if (num2 == 4)
   {
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1231650828321.jpg\"");
           }
 
              if (num2 == 5)
   {   
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1231631886317.jpg\"");
           }
 
              if (num2 == 6)
   {   
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1231631292685.jpg\"");
           }
 
              if (num2 == 7)
   {     
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1231625357305.jpg\"");
           }
 
              if (num2 == 8)
   {    
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1231617324935.jpg\"");
           }
 
              if (num2 == 9)
   {     
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1231611926870.jpg\"");
           }
 
              if (num2 == 10)
   {     
           system("\"C:\\Documents and Settings\\Administrator\\New Folder\\Images\\1231603324024.jpg\"");
           }
 
           else{
               // cout << num2 << endl;
                }
 
        }
    else{
        cout << "Wrong password!\n";
        system("pause");
    }   
 
 
//    system("pause");
    return 0;
}

string path = "C:\\";
path += (rand()%5+1)+'0';
path += ".jpg";

string path = "\"C:\\Documents and Settings\\My Documents\\";

string path = "\"C:\\Documents and Settings\\Music\\My Documents\\";
path += (rand()%5+1)+'0';
path += ".jpg\"";
system(path.c_str());

#include <sstream>
...
ostringstream oss;
oss << "\"C:\\Documents and Settings\\";
oss << rand()%1000 + 1;
oss << ".jpg\"";
 
system(oss.str().c_str());