I’m learning C++ now and im following a tutorial made by BroCode.
Anyways. He’s talking about how these functions should output a rounded number but it doesn’t do it in my programm
#include <iostream>
#include <cmath>
int main(){
double x = 3;
double y = 4;
double pi = 3.14;
double z;
z = round(pi);
std::cout << pi << 'n';
z = ceil(pi);
std::cout << pi << 'n';
z = floor(pi);
std::cout << pi << 'n';
return 0;
}
3.14 is the output for all 3 of those functions.
5
std::round, std::ceil, and std::floor do not modify the variable passed to them. They return the rounded, ceilinged, or floored value as their result. That means that in your example, pi remains unchanged, but z will be either 3 or 4 depending on the operation done.