Write a C++ program to change the case (lower to upper and upper to lower cases) of each character of a given string

#include <iostream>
#include <string>
#include <cctype>
using namespace std;

string change_Case(string text) {

	for (int x = 0; x < text.length(); x++)
	{
		if (isupper(text[x]))
		{
			text[x] = tolower(text[x]);
		}
		else
		{
			text[x] = toupper(text[x]);
		}
	}

	return text;
}

int main() {

	cout << "Original string: Python, After changing cases-> "<< change_Case("Python") << endl;
	cout << "Original string: w3resource,  After changing cases-> "<< change_Case("w3resource") << endl;
	cout << "Original string: AbcdEFH Bkiuer,  After changing cases-> "<< change_Case(" AbcdEFH Bkiuer") << endl;
	return 0;
}