operations.cpp
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	#include <cmath>
	int main(int argc, char *argv[]) {
	int a = 5, b = 2, c;

	c = a + b; // integer addition
	c = a - b; // integer substraction
	c = a * b; // integer multiplication
	c = a / b; // integer division (careful!)
	c = a % b; // modulo operation

	double x = 1.0, y = 2.0, z;

	z = (double)a / (double)b; // cast integer to a float

	z = x / y; // floating point division
	z = sqrt(x); // square root
	z = exp(y); // exponential function
	z = pow(x, y); // x to the power of y
	z = M_PI; // z stores the value of pi

	return 0;
	}