Thread: Randomized multiple choice

somethings wrong with the code tags or is it just me

It's not just you, I have seen this before. Seems like the new lines are ignored, try again I suppose.

u can jump down to the add and subtraction functions. i figured thats where the random multi choice should be implemented

okay I figured out how to do multichoice kinda. below are my two new addition and subtraction functions. but my problem is when trying to input the character here:

Code:

scanf("%c", &userselect);

it just skips it, im pretty sure it is because characters dont work that way, but can someone show me an alternative way?

Here is the rest of the goods:

Code:

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










int menu();
void addition(int *Preward); // function to return truth values
void subtraction(int *Preward);


int main()
{
    int Finished = 0;
    int choice, score = 0;
    int reward = 0;


    while(Finished != 1) // while finished is not true
    {
        printf("\nscore: %d", score); // print the score
        {
            choice = menu(); // calls for user input and enters it to switch
            switch  (choice){ // accesses the functions
            case 0: Finished = 1;                     break;
            case 1: addition(&reward);                break;
            case 2: subtraction(&reward);             break;
            default : printf("Error in input\n\n");   break;
            }
            if(reward == 1){
                score += reward; // score = score + reward
            }
        }
    }
    return 0;
}


int menu() //main menu that gets called and allows fr user input
{
    int MenuChoice;
    printf("\n");
    printf("Enter 1 for addition\n");
    printf("Enter 2 for Subtraction\n");
    printf("Enter 0 to quit\n");
    printf("-----------------\n");
    printf("Choice: ");
    scanf("%d", &MenuChoice); // user input
    return MenuChoice; //return the choice to choice to select a case
}


void addition(int *Preward) //function that is called by the users selection
{


    int random1, random2;
    int order;
    int one, two, three;
    int rando1, rando2;
    char a, b, c;
    char userselect;
    srand(time(NULL)); //generates fresh numbers each time.
    random1 = 1+(rand()%99); // from 1-99
    random2 = 1+(rand()%99); // from 1-99
    rando1 = 2+(rand()%198); // 2 to 198
    rando2 = 2+(rand()%198); // 2 to 198
    order = 1+(rand()%3);


    switch(order){
        case 1: printf("\n%d + %d = ", random1, random2);
            one = (random1+random2);
            two = (rando1);
            three = (rando2);
            printf("\n select from the following\n a) %d b) %d  c) %d\n", one, two, three);
            scanf("%c", &userselect);
                if (userselect == a){
                    printf("Congratulations\n\n");
                    *Preward = 1;
                }
                else{
                    printf("incorrect, correct answer is a\n\n");
                 }break;




        case 2: printf("\n%d + %d = ", random1, random2);




            one = (rando1);
            two = (random1+random2);
            three = (rando2);
            printf("\n select from the following letters\n a) %d b) %d  c) %d\n", one, two, three);
            scanf("%c", &userselect);
                if (userselect == b){
                    printf("Congratulations\n\n");
                    *Preward = 1;
                }
                else{
                    printf("incorrect, correct answer is b\n\n");
                }break;


        case 3: printf("\n%d + %d = ", random1, random2);
            one = (rando1);
            two = (rando2);
            three = (random1+random2);
            printf("\n select from the following letters\n a) %d b) %d  c) %d\n", one, two, three);
            scanf("%c", &userselect);
                if (userselect == c){
                    printf("Congratulations\n\n");
                    *Preward = 1;
                }
                else{
                    printf("incorrect, correct answer is c\n\n");
        }break;
        default: printf("error\n"); break;
}
}


void subtraction(int *Preward) // follows same model as previous function, but instead subtraction.
{
    int random1, random2;
    int order;
    int one, two, three;
    int rando1, rando2;
    char a, b, c;
    char userselect;
    srand(time(NULL)); //generates fresh numbers each time.
    random1 = 1+(rand()%99); // from 1-99
    random2 = 1+(rand()%99); // from 1-99
    rando1 = 2+(rand()%198); // 2 to 198
    rando2 = 2+(rand()%198); // 2 to 198
    order = 1+(rand()%3);


    switch(order){
        case 1: printf("\n%d - %d = ", random1, random2);
            one = (random1-random2);
            two = (rando1);
            three = (rando2);
            printf("\n select from the following\n a) %d b) %d  c) %d\n", one, two, three);
            scanf("%c", &userselect);
                if (userselect == a){
                    printf("Congratulations\n\n");
                    *Preward = 1;
                }
                else{
                    printf("incorrect, correct answer is a\n\n");
        }break;






        case 2: printf("\n%d - %d = ", random1, random2);
            one = (rando1);
            two = (random1-random2);
            three = (rando2);
            printf("\n select from the following letters\n a) %d b) %d  c) %d\n", one, two, three);
            scanf("%c", &userselect);
                if (userselect == b){
                    printf("Congratulations\n\n");
                    *Preward = 1;
                    }
                else{
                    printf("incorrect, correct answer is b\n\n");
        }break;


        case 3: printf("\n%d - %d = ", random1, random2);
            one = (rando1);
            two = (rando2);
            three = (random1-random2);
            printf("\n select from the following letters \na) %d b) %d  c) %d\n", one, two, three);
            scanf("%c", &userselect);
                if (userselect == c){
                    printf("Congratulations\n\n");
                    *Preward = 1;
                    }
                else{
                    printf("incorrect, correct answer is c\n\n");
        }break;
        default: printf("error\n"); break;
}
}