Thread: how do I rest/sum only the half?

I try making a little program that sums or rests depending on user input how do I make that? ps. I want to sum/rest an integer not float

if you want to see the source code here it is:

Code:

#include <stdio.h>
#include <windows.h>
#include <string.h>
int MaxNum = 1000; //The computer will guess the number in a maximum of 10 tries
char Q [5] = "Q";
char QPH [5];  //The actual Quit the user will type in the game
char P [5] = "P";
char moreOrLess[100];
char yes [2] = "Y";
char NoItIsLess [3] = "NL";
char NoItIsMore [3] = "NM";
int num = 500;


int main()
{
    system("cls");
    HANDLE consoleHandle = GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleTextAttribute(consoleHandle, 10);
    printf("                              Guess the number!                              \n"); //The spaces are to align it to the center
    SetConsoleTextAttribute(consoleHandle, 9);
    printf("                        Press P to enter the game                              \n");
    SetConsoleTextAttribute(consoleHandle, 11);
    printf("                         Press Q to exit the game                              \n");
    SetConsoleTextAttribute(consoleHandle, 14);
    printf("       Type Help to see the instructions (recomended for first time users)                              \n");
    SetConsoleTextAttribute(consoleHandle, 12);
    scanf("%s", QPH);
    if (strcmp(Q, QPH) == 0)
    {
        SetConsoleTextAttribute(consoleHandle, 15);
        printf("                         Come back again!                         ");
        SetConsoleTextAttribute(consoleHandle, 7);
    }
    if (strcmp(P, QPH) == 0)
    {
        SetConsoleTextAttribute(consoleHandle, 15);
        printf("Think of a number from 1 to 1000 I will guess it. ");
        printf("If you dont believe me lets try it...\n");
        printf("The number is %d.If it is correct say Y if it is incorrect and your number is more say NM or if it is incorrect amd it is less say NL\n", num);
        scanf("%s", moreOrLess);
        if (strcmp (yes, moreOrLess) == 0)
        {
            printf("Thanks for playing");
        }
        if (strcmp (NoItIsLess, moreOrLess) == 0)
        {
            num -= 250 ; //here is where I need help 
            printf("The number is %d", num);
        }
        if (strcmp (NoItIsMore, moreOrLess) == 0)
        {
            num += 250 ; //and here
            printf("The number is %d", num);
        }
    }
    SetConsoleTextAttribute(consoleHandle, 7);
    return 0;
}