#include <stdio.h>
#include <math.h>
int main(){
    srand(time(0));


    int a, age, age1 , mark ,b ,bin;
    char first[10], first1[10], last[10], last1[10], web[30], disk[30];
    float answer;
    int operator = rand()%-50-1;
    char ops[5] = {'+', '-', '*', '/'};
    int worked = 1;

    printf("Welcome to our program");
    printf("\n1- High school \n2- University UG \n3- Master or higher");
    printf("\nChoose one of the following : ");

    scanf("%d", &a);
    switch(a){
        case 1:
        printf("You Have to Pass the exam before enter our program");
        break;
        case 2:
        printf("You're Elegible to join our program now !");
        break;
        case 3:
        printf("You're not allowed to join our program , Sorry");
        break;
        default :
        printf("Error ! , Please choose a number from 1 - 3 , Thanks!");
        break;
    }
    if (a == 1)
    {
        printf("\nPlease Register for the exam :");
        printf("\nWhat is Your First Name : ");
        scanf("%s", &first1);
        printf("\nWhat is Your Last Name : ");
        scanf("%s", &last1);
        printf("\nWelcome %s %s", first1 , last1);
        printf("\nWhat is your age : ");
        scanf("%d", &age1);
        printf("\n1- Math \n2- Computer");
        printf("\nPlease choose one question from these : ");
        scanf("%d", &b);
        switch(b){
            case 1:
            printf("\nWelcome! Solve this Equation:\n\n");
            printf("%d%c%d=?\n\n", rand()%-50-1, ops[rand()%4], rand()%-50-1);
            scanf("%d\n", &answer);
            switch (ops[4]) {
                case'ops[5]':
                answer = operator, ops[rand()%4], operator;
                break;
                default:
                printf("I'm sorry, that is not correct.  keep trying.\n");
                worked = 0;
            }
            if (worked ==1) {
                printf("Congratulations! You have answered the problem correctly!%d\n", answer);
            }
            break;
            case 2:
            printf("\nThe concentric circles on the floppy disk are further divided into : ");
            scanf("%s", &disk);
            printf("\nGive an example of a binary number : ");
            scanf("%s", &bin);
            printf("\nA Web site's main page is called : ");
            scanf("%s", &web);
            break;
            default :
            printf("Error ! , Please choose a number from 1 - 2 , Thanks!");
            break;
        }
        printf("Thanks We will Contact with you soon !\n");

    }
    else if (a == 2)
    {
        printf("\nPlease register : ");
        printf("\nWhat is Your First Name : ");
        scanf("%s", &first);
        printf("\nWhat is Your Last Name : ");
        scanf("%s", &last);
        printf("\nWhat is your age : ");
        scanf("%d", &age);
        printf("\nWhat is your Marks : ");
        scanf("%d", &mark);
        printf("\nYou have been Registered Successfully ");
        printf("\nWelcome %s %s", first, last);
        printf("\nWe will Contact you soon .\n");
    }
    return 0;

}