20140519_KUAS_VisualC++_Classwork_0430_Question_1_Answer

/***********************************************/
/** 20140519 Classwork_0430 Question 1 Answer **/
/** Maker  : Yan                              **/
/** E-Mail : [email protected]            **/
/** Date   : 2014/05/19 am.01:19              **/
/***********************************************/

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

int process_input(int, int);
void exit_program();

void main()
{
    srand(time(NULL));
    int random = rand() % (100 - 1 + 1) + 1;

    while(1)
    {
        printf("Please guess a number: ");
        int input = 0;
        scanf("%d", &input);
        if(input == 0)
        {
            exit_program();
        }
        else if(input > 0)
        {
            switch(process_input(input, random))
            {
                case 0:
                    printf("My answer is smaller than %d.\n", input);
                    break;
                case 1:
                    printf("My answer is larger than %d.\n", input);
                    break;
                case 2:
                    printf("Bingo!! You got it!!\n\n");
                    exit_program();
                    break;
            }
        }
    }
}

int process_input(int input, int random)
{
    if(input > random)
    {
        return 0;
    }
    else if(input < random)
    {
        return 1;
    }
    else if(input == random)
    {
        return 2;
    }
}

void exit_program()
{
    printf("You are exiting now ..\n");
    exit(1);
}