char related problem

This is a discussion on char related problem within the C Programming forums, part of the General Programming Boards category; i made an odd loop. when i press 'y' , i want to continue the loop but it does not. ...

  1. #1
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    char related problem

    i made an odd loop. when i press 'y' , i want to continue the loop but it does not. any one can give me a solution?
    program is given below..

    Code:
    #include<stdio.h>
    #include<conio.h>
    void main()
    {int n;
    char i='y';
    if(i=='y')
    {printf("Enter a number : ");
    scanf("%d",&n);
    printf("\nSquare of %d is %d",n,n*n);
    printf("\nWould you like to enter another  number? (y/n)");
    scanf("%c",&i);
    }
    getch();
    clrscr();
    }

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    1. If you want your program to loop then, well, you need to use a loop. "if" isn't a loop, it's just a branch point; there's no return. Your loops are called "for", "while", and "do while".
    2. Once you get that in, there is the fact that at the end of the block, the value of i must needs be '\n' (unless you were thinking way ahead and typed "4y" at the prompt). To make %c skip enter-key and read a "normal" character, you need to use a space: " %c".

  3. #3
    and the hat of wrongness Salem's Avatar
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    You didn't make a loop - an if() statement is not a loop.

    while ()
    do while()
    Are loops, which test at the start and end of the loop respectively.


    You should also have

    scanf(" %c",&i);Note the initial space in this format string.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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  4. #4
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    Additionally, void main is wrong. The minimum C program is:
    Code:
    int main(void){
    
         return (0);
    }
    Read about How to define main-FAQ

    Based on you using void main, getch, and conio.h I am going to assume you are also using Turbo C. It is time to get a new compiler. There are plenty of standard compilers out there that are free.
    Quote Originally Posted by anduril462 View Post
    Now, please, for the love of all things good and holy, think about what you're doing! Don't just run around willy-nilly, coding like a drunk two-year-old....
    Quote Originally Posted by quzah View Post
    ..... Just don't be surprised when I say you aren't using standard C anymore, and as such,are off in your own little universe that I will completely disregard.
    Warning: Some or all of my posted code may be non-standard and as such should not be used and in no case looked at.

  5. #5
    Third Eye Babkockdood's Avatar
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    ^ What these guys said. And indent your code, it's much easier to read with proper indentation.
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