DaniWeb Forum Index > Software Development > C

C RSS

strange problem

•

Join Date: Oct 2004

Posts: 6

Reputation: navyblue is an unknown quantity at this point

Solved Threads: 0

navyblue

Offline

Newbie Poster

strange problem

Mar 12th, 2005

#include<stdio.h>
main()
{int i;
do{
printf("*");
scanf("%d",&i);
}while(1);
}
this is a sample program,but u don't look down upon it
when u input a unnummber ,there will no stop!
i want to know why ???????????????????

•

Join Date: Nov 2004

Posts: 108

Reputation: prog-bman is an unknown quantity at this point

Solved Threads: 3

prog-bman

Offline

Junior Poster

Re: strange problem

Mar 12th, 2005

Well it's not a strange problem considering it's doing what it is supposed to do.

First off, when posting code please use code tags. Read here

Second, main returns an int it should be int main(void).

Third, When writing please use complete sentences and use "you" not "u". Also using a bunch of question marks doesn't make your question more of a question.

Fourth, what your program is doing is looping while (1). This is saying while true repeat(any non zero number is "true"). What you were probably going for was something like this:

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
#include <stdio.h>
 
int main(void)
{
    int number;
    do
    {
        /*notice the spacing it makes your code much easier to read*/
        printf("*\n");
        printf("Enter 0 if you want to quit\n");
        scanf("%d",&number);
 
    }while (number != 0);
 
    return 0;
}
#include <stdio.h>

int main(void)
{
    int number;
    do
    {
        /*notice the spacing it makes your code much easier to read*/
        printf("*\n");
        printf("Enter 0 if you want to quit\n");
        scanf("%d",&number);
    
    }while (number != 0);
    
    return 0;
}