Please help with formatted I/O

This is a discussion on Please help with formatted I/O within the C Programming forums, part of the General Programming Boards category; I won't post my program because i don't want anyone to think i want my program written for me. I ...

  1. #1
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    Please help with formatted I/O

    I won't post my program because i don't want anyone to think i want my program written for me. I have written a program and now i have to add I/O to the program can anyone tell me where to start. I will search the board in the meantime for a jumpstart.

    Thanks for the help!

  2. #2
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    post your code. As long as you have something and are not asking a question like, "How do you write a linked list?" or something like that, you should be fine. It was smart of you to look elsewhere on the board though....

  3. #3
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    ok, here's my code:
    #include <stdio.h>
    #include <math.h>

    int main(void) {

    /* Variable declarations: */
    double SR, CR, L, X, H;

    /*Function body: */
    SR=0.0;
    CR=0.0;
    L= 0.0;
    X= 0.0;
    H= 0.0;

    printf("Enter low value: ");
    scanf("%lf", &L);
    printf("Enter high value:");
    scanf("%lf", &H);

    printf("Value Square Root Cubic Root \n");

    while (L >= H) {

    printf("Low is greater than High, please re-enter:");
    scanf("%lf", &L);
    scanf("%lf", &H);
    } /* end while */

    while (L <= H) {
    X=1.0/3.0;
    SR = sqrt(L);
    CR = pow(L,X);
    printf("%3.1f %7.5f %7.5f \n",L, SR, CR);

    L = L + 0.1;

    }/* end while */

    return 0;

    } /* end function main */

    thanks for the help, I am finding information on I/O on this board but i am new to C and I am not really understanding what I am reading, again, thanks for the help!

  4. #4
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    sorry, forgot to register on that last post!

  5. #5
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    Hmm.. could you elaborate on what you mean by IO? Because printf and scanf are IO functions already...
    Callou collei we'll code the way
    Of prime numbers and pings!

  6. #6
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    QuestionC,
    Right you are! I read that, sorry we have this **** really smart programmer for an instructor and he teaches for the first few weeks of school and after that you're on your own, trying to program. The program that was just completed consists of arithmetic calculations, the next thing he told us was to add formatted input and output to the program. I am at a lost. I did ask for more information and he said to read the chapter which talks about formatted input and output.

    It does state in the chapter that "in C we use the printf function for interactive output. Input also comes from data files and output of a computer program can be directed to the standard output device.

    If you can, please help me, I am all read out! At the end of the semester and i hate to give up!!!! Thanks for your time.

  7. #7
    Code Goddess Prelude's Avatar
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    It looks like you already have formatted i/o. Take the code to your teacher and make him describe exactly what he wants.

    "Use formatted input and output to add interactivity to your program"
    Most Common Translation: Use scanf and printf

    -Prelude
    My best code is written with the delete key.

  8. #8
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    thanks Prelude,
    i will do that. are you saying that the following statements:
    printf("Enter low value: ");
    scanf("%lf", &L);
    printf("Enter high value:");
    scanf("%lf", &H);

    allows the user to interactively enter values that it is input and when the values are printed to the screen it is output?

    just trying to understand and i am getting ready for class, i will take your advice and as always Thanks for your time and knowledge...

  9. #9
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    Well, yep, that's pretty much what we mean... but still, I'd check with your teacher because he may have meant something else that we're not thinking of.
    Callou collei we'll code the way
    Of prime numbers and pings!

  10. #10
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    ok, thanks everyone, i am off to class now will post later my results.

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