#include <iostream>
using namespace std;

int main (){
    
    int nums=0;
    int loop=0;
    
    cout << "Input positive values, input 0 when you wish to stop." << endl;
    cin >> nums;
    
    while ( nums != 0 ){
          cin >> nums;
          if ( nums >= 50 && nums <= 75)
    
          
          cout << "The range:" << nums << endl;

    }               
    system("PAUSE");
    
    return 0;
    
}

/* malloc()! are you trying to scare him off?  At least he posted SOMETHING 
    As Ocicat mentioned  an 'array' data structure can be easily 
    impilemented and is safe to use as long as you put certain precautionary 
    measures in place. Keep in mind that an array are stored in a contiguous 
    group of bytes in memory. If you read or write too far you will mess up 
    other data in this program or possibly in another program like your bank 
    accounting program you have running there... 
    Start by learning yer basic 'loop through an array'.
    Look up 'array's in book or online tutorials.
    It's actually easier to start with character arrays, (referred to as 'strings') 
    but working with what you posted, here are some concepts to get you going:
*/
#include <iostream>
using namespace std;

int main ()
{
    const int max = 100;
    int nums[max]= {0};    /* an array of 100 ints initialed to zero */
    int count, loop= 0;

    cout << "Input positive values, input 0 when you wish to stop." << endl;

    /* while ( nums != 0 ){  ... a 'for'loop offers more options , here we
       assign starting value, check the condition and increment the count */
    for( loop = 0; loop < max; loop++ )
    {
        cin >> nums[loop];    /* get the input for nums[0] , nums[1] etc */
        if( nums[loop] == 0 )  /* until user enters a zero                */
        {
          cout << "Ending Input Phase " << endl;
          break;              /* break out of the for loop */
        }
    }   /* for simplicity here we 'break' out of the for loop.  That could be 
           done in the conditional part of the 'for' statement as well.  
    Now move into the printback phase which is pretty much the same loop: */
    count = loop;
    for(loop = 0; loop < count && loop < max; loop++)
    {
      if ( nums[loop] >= 50 && nums[loop] <= 75)
        cout << "The range:" << nums[loop] << endl;
    }
    getchar();    /* don't use  system("PAUSE"); getchar works fine */
    return 0;
} 
/* Now you finish sprucing it up and move directly into malloc() (kidding) 
   one step at a time  */