Question

(c programming)

Examine the following code:

int x = 5;

while(x = 0){
    x += x;
}

while(x-- > 5){}

What is the final value of x? Does the assignment expression in the first loop occur and if so, what value does it evaluate to?

Answer 1

#include <stdio.h>

int main()
{
    int x = 5;
    
    while(x = 0){
        x += x;
    }
    
    while(x-- > 5){}
    
    printf("%d",x);

    return 0;
}

-1

the final value of x is -1

the assignment expression in the first loop occur
So, the value of x will be 0

and then
after executing the expression x-- > 5 the value of x will be -1

So, final value of x is -1