Thread: help with WHILE Loop

Hi all,
for some reason my WHILE loop is not working, I have tried a few different things (Inc a do-while) and it just won't do what I want!

Thanks in advance for the help.

Code:

#include <stdio.h>

int main( ) {
    char YN_Continue;
       float radius, circumference, area, pi=3.14159;

    YN_Continue = 'Y';
    while (YN_Continue == 'Y'){       
        printf(" Enter the radius of a circle: ");
        scanf("%f", &radius);

        circumference = 2 * pi * radius;
        area = pi * radius * radius;

        printf(" circumference of circle with radius: %.2f is: %.2f\n", radius, circumference);
        printf(" area of circle with radius: %.2f is: %.2f\n\n", radius, area);

        printf(" Would you like to enter another radius? (Type Y/N): \n\n");
        scanf("%c", &YN_Continue);
    }
    
    printf(" GoodBye!");
       return 0;
}

and the do-while also didn't work for me

Code:

#include <stdio.h>

int main( ) {
	char YN_Continue;
   	float radius, circumference, area, pi=3.14159;

	do {   	
		printf("Enter the radius of a circle: ");
		scanf("%f", &radius);

		circumference = 2 * pi * radius;
		area = pi * radius * radius;

		printf("circumference of circle with radius: %f is: %f\n", radius, circumference);
		printf("area of circle with radius: %f is: %f\n", radius, area);

		printf("Would you like to enter another radius? (Type Y/N): ");
		scanf("%c", &YN_Continue);
	} while (YN_Continue == 'Y');
	
	printf("GoodBye!");
   	return 0;
}

You should explain how your programs aren't working.

Fortunately, I think I know the problem you're having, and the reason for it (and solution) can be found here: FAQ > How do I avoid a "dangling" newline when reading single character user input? - Cprogramming.com

Thanks! that did indeed explain it perfectly. greatly appreciate it!