/* 
 * Example of the ``dangling else'' problem
 *
 * if (y != 0)
 *     if (x != 0) 
 *         quotient = x/y; 
 * else 
 *     printf("Error: y is equal to 0\n"); 
 *
 * Question: which ``if'' does ``else'' belong to? 
 *
 */ 

#include <stdio.h> 

int main()
{
    double x, y, quotient; 

    printf("Please input x, y > ");
    scanf("%lf%lf",&x,&y); 

    if (y != 0.0)
    { 
        if (x != 0.0) 
            quotient = x/y; 
        else                               // extra line for info 
            quotient = 0;                  // extra line for info 
        printf("x/y = %.2f",quotient);     // extra line for info 
    } 
    else
        printf("Error: y is equal to 0\n"); 

    return(0); 
}