<C Primer Pus>6 Using Relational Operators and Exprssions

while(number < 6){
    printf("Your number is too small.
");
    scanf("%d", &number);                
}


while(ch != '$'){
    count++;
    scanf("%c", &ch);
}    


while(scanf("%f", &num) == 1){
    sum = sum +num;
}

#include <stdio.h>
#include <math.h>
int main(void){
    const double ANSWER = 3.14159;
    double respone;

    scanf("%lf", &respone);
    while (fabs(respone - ANSWER) > 0.0001){
        printf("Try again.
");
        scanf("%lf", &respone);
    }

    printf("Close enough.
");

    return 0;
}

REMEBER :

You should limit yourself to using only < and > in floating-point comparisons.

while(status == 1)  is ture.  and  while(status = 1) is ture ....so advice to write like that  while(1 == status).