C Compiler for a C beginnger

This is a discussion on C Compiler for a C beginnger within the C Programming forums, part of the General Programming Boards category; I'm going crazy over this So I downloaded like 5 C compilers for Win XP and all of them give ...

  1. #1
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    C Compiler for a C beginnger

    I'm going crazy over this
    So I downloaded like 5 C compilers for Win XP and all of them give me the same problem : when I compiler & run a command prompt window appears like if it was there for me to actually give the program the input it needs...

    ...but then it quickly dissappears and nothing else happens.


    I'm currently using Dev c++ and the same things is happening...I can't run my programs


    I'm kind of a newbie so bare with me please

  2. #2
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    Quote Originally Posted by Dungah
    I'm going crazy over this
    So I downloaded like 5 C compilers for Win XP and all of them give me the same problem : when I compiler & run a command prompt window appears like if it was there for me to actually give the program the input it needs...

    ...but then it quickly dissappears and nothing else happens.


    I'm currently using Dev c++ and the same things is happening...I can't run my programs


    I'm kind of a newbie so bare with me please
    Man try to execute the exe file by double clicking it or do a dirty trick and place a getchar(); at the end of the source. I think there is something about it on the faq but I really could'nt find it.
    Just as example:
    Code:
    #include <stdfoo.h>
    
    int main (void){
       foo(void);
    
       getchar();
       return 0;
    }

  3. #3
    Just Lurking Dave_Sinkula's Avatar
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    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

  4. #4
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    Get visual c++ express edition from the ms website free
    silk.odyssey

  5. #5
    Registered User 00Sven's Avatar
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    I just use Dev-C++ and its built in compiler. I also set up my command prompt to be able to use the gcc command to compile so that if I need to edit quickly I can use the edit and gcc if I need to make a quick change.
    ~Sven

  6. #6
    Registered User im fine u?'s Avatar
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    I insert my command prompt into the Dev C++ folder where my programs are, and type the name of the program at the prompt, and it runs without shutting off

    -im fine u?

  7. #7
    Just Lurking Dave_Sinkula's Avatar
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    Did you have a question?
    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

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    Okay my problem is partially solved but I had another question and I dind't want to make a new topic :

    So I'm making a program which probably is something very normal for beginners to be assigned to.It's that "Guess a number" program.I have almost everything checked....

    The only thing I'm bot getting right is the random number the computer should generate.It always generates the same number!So I know there is no such thing as a real random computer generated number but I don't restart my PC between each try and I still get the same number.

    Wow can I make it generate different "random" numbers?
    Better yet how can I make him generate numbers with different sizes (I can't get it to generate numbers with different number digits each time)


    Thanks in advance

  9. #9
    Registered User 00Sven's Avatar
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    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>
    int main(){
    int r;
    r=srand((unsigned)time(null));
    /*This creates an integer assigned to r that is random when assigned but then stays the same after it is declared.  */
    printf("%d",r);
    }
    If you want to make it within a certain range you need to use the % operator. For example if you want a random number between 1 and 100 you would do:
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>
    int main(){
    int r;
    r=srand((unsigned)time(null))%100;
    printf("%d",r);
    return(0);
    }
    ~Sven

  10. #10
    Frequently Quite Prolix dwks's Avatar
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    Code:
    r=srand((unsigned)time(null));
    NULL is uppercase, not lowercase.
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>
    int main(){
    int r;
    r=srand((unsigned)time(null))%100;
    printf("%d",r);
    return(0);
    }
    That doesn't do what you think it does. Try this program instead:
    Code:
    #include <stdio.h>  /* for printf() */
    #include <stdlib.h>  /* for rand(), srand() */
    #include <time.h>  /* for time() */
    
    int main(void) {
        int x;
        srand((unsigned)time(0));
    
        x = rand() % 100;
    
        printf("You have a %i%% change of doing that.\n", x);
    
        return 0;
    }
    See the FAQ, too, for more information.
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


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  11. #11
    Registered User 00Sven's Avatar
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    Yeah I noticed that. In another thread I mentioned how I was making a function for doing this easier. I messed up in that and then changed it a little to put here and didn't catch that.
    ~Sven

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