my way

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

 string s (string test)
{
	int a=strlen(test.c_str())-1;
	string reversedstring = "";
	while (a >= 0)
	{
		reversedstring += test[a];
		a--;
	}
	return reversedstring;
}


 int main(){
 cout<<s("hello!")<<endl;
 }