Create calculate.h

Author: Quincy

4.0/calculate.h

@@ -0,0 +1,15 @@
+#include <iostream>
+#include <string>
+#include <fstream>
+#include <vector>
+#pragma once
+
+struct calculate
+{
+	std::string add(double numA, double numB);
+	std::string subtract(double numA, double numB);
+	std::string multiply(double numA, double numB);
+	std::string divide(double numA, double numB);
+	std::string power(double numA, double numB);
+	std::string square(double numA, double numB);
+};