Higher or Lower Game Help

[GourlayPaul]

I was wondering if someone could point out where im going wrong, the random number the computer is generating isn't within the limits that are being dynamically set

  #include <iostream>
#include <stdlib.h>
#include <time.h>

using namespace std;

int main()
{
    srand(time(0));
    cout << "Welcome to Higher or Lower" << endl;
    cout << "Please pick a number between 0 and 100" << endl;
    system("PAUSE");

    int high = 100, low = 0, guess;
    char resp;

    while (resp!='Y'){
        guess = (rand() % high + low);
        cout << endl << "Is your number :" << guess << endl;
        cout << "Yes - Y. Higher - H. Lower - L: ";
        cin >> resp;

        if(resp=='H'){
            low = guess;
        }else{
            high = guess;
        }
    }
    return 0;
}

thanks in advance for any help

[MiiNiPaa]

guess = (rand() % high + low);

guess = (rand() % (high - low) + low);

[GourlayPaul]

Thanks that fixed it, could you possibly explain why that works so i know in future?

[MiiNiPaa]

for example high = 60, low = 50;
your code:
rand() % high generates number 0 - 59
(rand() % high + low) generates 50 - 109

My code:

rand() % (high - low)

generates 0 - 9
(rand() % (high - low) + low); generates 50 - 59

high - low is a "distance" between two numbers, amount of numbers between them. we should be able to generate that "dinstance" amount of different values, no more, no less.

+ low just modifies it to be in needed range.

[GourlayPaul]

Ok, thanks