Help using a character as parameter

This is a discussion on Help using a character as parameter within the C Programming forums, part of the General Programming Boards category; I have a multiple choice function below that is part of a larger program but I am having trouble having ...

  1. #1
    Registered User
    Join Date
    Feb 2012
    Posts
    27

    Help using a character as parameter

    I have a multiple choice function below that is part of a larger program but I am having trouble having it operate with characters as inputs and arguments. It has to be a character input, but I kinda want it to act like an integer, how do i do that?

    Code:
    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; // ERROR char userselect; //ERRRORR 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); //ERROR if (userselect == a){ //ERROR printf("Congratulations\n\n"); *Preward = 1; } else{ printf("incorrect, correct answer is a\n\n");
    }break;


  2. #2
    C++ Witch laserlight's Avatar
    Join Date
    Oct 2003
    Location
    Singapore
    Posts
    23,629
    Hmm... looks like your code formatting got messed up. You might want to try again.

    Anyway, a character is an integer, more or less.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

  3. #3
    - - - - - - - - oogabooga's Avatar
    Join Date
    Jan 2008
    Posts
    2,808
    I fixed your code posting problem, but it wore me out so much that I don't really feel like looking at the code. I put a couple of notes in it though.
    Code:
    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)); /// You probably want this in main 
                           /// (only call it once in the program)
    
        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) {    /// a hasn't been initialized to anything. Do you mean 'a' ?
                    printf("Congratulations\n\n");
                    *Preward = 1;
                }
                else {
                        printf("incorrect, correct answer is a\n\n");
                }
            break;

  4. #4
    C++ Witch laserlight's Avatar
    Join Date
    Oct 2003
    Location
    Singapore
    Posts
    23,629
    Continued at Help using a character as parameter.

    *thread closed*
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. Replies: 10
    Last Post: 07-05-2011, 08:21 PM
  2. Replies: 6
    Last Post: 01-08-2008, 09:25 AM
  3. wide character (unicode) and multi-byte character
    By George2 in forum Windows Programming
    Replies: 6
    Last Post: 05-05-2007, 12:46 AM
  4. about wide character and multiple byte character
    By George2 in forum C Programming
    Replies: 3
    Last Post: 05-22-2006, 08:11 PM
  5. scanf(), Parameter Passing, and Character Arrays
    By linguae in forum C Programming
    Replies: 2
    Last Post: 05-02-2005, 04:19 AM

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21