Thread: help!! i have the wierdest problem??

okay so I write to see programs in an IDE compiler, the programs run fine through the IDE, but when I run them on and other computer, the program closes before the final output is shown. Now see the weird thing is I had getchar and return in their, and it kept on doing the same thing; it never stopped for more input. If the only way I was able to correct this is with fflush (stdin), but I have never had to use this before. At first I thought maybe it was some type of corrupt or damaged development environment, so I uninstalled and deleted everything; and then reinstall it all fresh and stuff. Has anyone else come across this problem? Is there another solution besides flush?


here is my code...but it does it with everything, even hello world!

Code:

   // this is where i come to test ........, by moi!!

#include <stdio.h>

main()

{
    //Defining response
        int iResponse = 0;

        //Displaying options for controler erotica

    printf("\n\tFemale Erotic Nerve Control Center\n");
    printf("\nCell 1\tTurn Orgasims On\n");
    printf("\nCell 2\tTurn Orgasims Off\n");

        //tell me what to do
       printf("\nEnter Neuron Cell: ");
       scanf("%d", &iResponse);

       //What will happen
       if (iResponse == 1)
        printf("\nErotic Sensations Now On,\n");

       else if (iResponse == 2)
        printf("\nErotic Sensations Now Off\n");

       printf("\nexit now!\n");

        fflush (stdin);
        
       getchar();

       return 0;


}

My answer is not as dramatic:

Whenever you have a scanf(), it leaves behind the \n (newline) char at the end, on the keyboard buffer.

So when your code gets down to getchar(), well, it does get a char alright - it gets that newline char, right off the keyboard buffer.

fflush(stdin), is one way to (maybe) get rid of the newline char on the input stream, but you shouldn't be flushing input streams, only output streams. It's undefined.

Answer that is defined is to add a getchar(), right after the scanf(), to pull the newline char off, and then everything will work right. Get rid of the fflush(stdin), of course.

Originally Posted by Adak

My answer is not as dramatic:

Not like death but like a flower.
If you try to smell it you may sneeze but you may don't.
Different people have different behavior (sometimes like computers).

omfg you are my hero Adak....i love you!!!