So here is the question I am given , I need to tell the output : #include <iostream> using namespace std; int main() { int x = 10; int y = 20; if(x++ > 10 && ++y > 20 ){ cout << "Inside if "; } else{ cout << "Inside else "; } cout <<… Read More Why isn't the ++y part executing?
I’m trying to get a list of objects from my global environment that contains items that have a single character at a certain position, and also contain another string at the end of their name. So I only want the matches where both of those conditions are true. This is what it looks like when… Read More How to search for two patterns in logical AND fashion with regex in R?
char ch; do { printf("Digite aqui um caractere: "); scanf(" %c", &ch); } while ((ch < ‘A’ && ch > ‘Z’ ) || (ch < ‘a’ && ch > ‘z’) || ch != ‘.’); return ch; I tried all sort of things on this condition and I can’t make it happen. I want to return… Read More I don't know what I'm doing wrong. I think my condition is right
I’m trying to implement logical NOT and logical AND in assembly, I did logical NOT already using x < 1 but I can’t think of how to implement AND, I can use binary and but that’s broken for negative numbers (it assumes -1 is true) and it doesn’t make any sense when NOT obviously works… Read More Logical AND implementation in x86_64 Linux assembly
While I was coding, I came to a place where I need to use if and the & operator. For any reason, it did not work and I was frustrated. The example code is here: #include <iostream> using namespace std; int main() { int a=0, b=0,c=0; if(a && b && c==0) { cout<<"Sound!"; } return… Read More How to use & operator in C++?
My prof once said, that if-statements are rather slow and should be avoided as much as possible. I’m making a game in OpenGL, where I need a lot of them. In my tests replacing an if-statement with AND via short-circuiting worked, but is it faster? bool doSomething(); int main() { int randomNumber = std::rand() %… Read More Can I replace an if-statement with AND?
On codecademy there exists a course on C, which includes a project on how to make a calendar. This project includes a boolean function which decides if a given year is a leap year or not. Code: bool is_leap_year(int year) { return (year % 4 == 0 && (year % 100 || year % 400… Read More What do these return conditions do in a Boolean function?