Writing a Program in C Program

This is a discussion on Writing a Program in C Program within the C Programming forums, part of the General Programming Boards category; Can someone help me, I am learning C Program and I missed class and my teacher is not a very ...

  1. #1
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    Question Writing a Program in C Program

    Can someone help me, I am learning C Program and I missed class and my teacher is not a very good teacher, (he keeps forgetting what he is talking about during class). Anyway, I am trying to write a program that does the following, that includes fopen(), fclose(), and fprintf(). I can not seem to getting working right. Please help

    1. Create a text file containing the following text. “Now is the time for all good men to come to the aid of their country.”

    2. Write a C program to open this file, read the contents, and print it to the screen. Incorporate a test to print out the message “No such file found” if the file does not exist.

    3. Submit the source file and an executable named “readfile”.

  2. #2
    Cat without Hat CornedBee's Avatar
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    1) Take a text editor and do it.

    2) So how far did you get? If your teacher is not good, take your textbook instead, or even an online tutorial. It's pretty basic stuff, and you even know the functions you need.

    3) You know how to compile, right? So compile, then submit the source file and the resulting executable using whatever submission process your school uses.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

  3. #3
    and the hat of wrongness Salem's Avatar
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    Well you could post your best effort to date, just so you don't sound like someone looking for free homework.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

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    This is what I have

    I am at work now so I can not see if it works.

    #include "stdio.h"

    void createfile( char * fname, char *s)
    {
    FILE *f = fopen( fname, "wt");
    if( f )
    {
    fprintf(f,"%s", s );
    fclose( f );
    }
    }

    void printfile( char *fname )
    {
    int ch;
    FILE *f = fopen( fname, "wt");
    if( f )
    {
    ch = 0;
    while( ch != EOF )
    {
    ch = fgetc(f );
    if( ch != EOF ) printf("%c", ch );
    }
    fclose( f );
    }
    else
    print "Can't open file %s\n", fname );

    }

  5. #5
    Mad OnionKnight's Avatar
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    In the printfile function you're opening the file for writing instead of reading. You also forgot using a code-tag which is impairing my vision.

  6. #6
    Cat without Hat CornedBee's Avatar
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    It's also a convention to use <> for system headers:

    #include <stdio.h>

    And a few syntax errors here and there.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

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    Thanks

    Thank you to all of you, I will try my changes at school

  8. #8
    The Right Honourable psychopath's Avatar
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    Code tags please.
    Memorial University of Newfoundland
    Computer Science

    Mac and OpenGL evangelist.

  9. #9
    ATH0 quzah's Avatar
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    I was going to reply something along the lines of "Use code tags, or I'll hunt you all down and kill you.", but I see you've already had a psycopath tell you to use them.


    Quzah.
    Hope is the first step on the road to disappointment.

  10. #10
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    Talking Thanks

    Thank you to all of you, I did make the changes and I got it to work

    Big thanks for the help

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