#ifndef TASKS_H // "if not defined". To prevent multiple inclusion of header files (These directive are for compatibility with previous versions of the language)
#define TASKS_H
//calculates the perimeter of a triangle from the lengths of its three sides
double perimeter(double, double, double);
//calculates the area of a triangle by the lengths of its three sides using Heron's formula
double areaFromSides(double, double, double);
//calculates the area of a triangle using the coordinates of its vertices
double areaFromPos(double, double, double, double, double, double);
//calculates the distance between two points on the plane, using their coordinates
double dist(double, double, double, double);
//finds the largest integer that does not exceed the cube root of a given number
double floorCubicRoot(double);
//calculates the result of taking a base number to power number
int GetPow(int, int);
#endif TASKS_H