+ 3
How many times will the following loop execute?
int x = 1; while (x++ < 5) { if (x % 2 == 0) x += 2; } The answer is 2. I got 4, where am I going wrong? 1 % 2 != 0, therefore the if statement shouldn't execute. 1 % 2 = 1 I guess remainders always round up? Since the if statement shouldn't execute, the function should loop 4 times because of the post-increment. If the if statement was formulated with a / instead of a % the answer would be 2. Maybe there's a bug in the application's answer? It's a sheet response, not a program.
2 Antworten
+ 4
First loop:
while(x++ < 5) //x is 1
{
//x is 2 because x++
if(x % 2 == 0) //true
{
x += 2; //x is 4
}
}
Second loop:
if(x++ < 5) //x is 4
{
//x is 5 because x++
if(x % 2 == 0) //false
{
x += 2; //no effect
}
}
Third loop: is not executed because x++ < 5 is false
+ 3
Thanks for the clarification. I was going through the forum on the question itself, and I found the answer.
I wasn't aware that the while command would execute regardless of the result of the if statement.
I thought the curly bracket statements needed to resolve prior to the rest of the function.
So modulus (%) doesn't grant the quotient, it just finds remainders if they exist.