zoj 1240 IBM Minus One

#include "iostream"
#include "string"
using namespace std;

int main()
{
	int TestCase, casecount = 0;
	cin >> TestCase;
	while (TestCase--)
	{
		string str;
		cin >> str;
		casecount++;
		int length = str.size();
		string ans = "";
		for (int i = 0; i < length; i++)
		{
			if (str[i] != 'Z')
				ans += str[i]+1;
			else
				ans += 'A';
		}
		cout << "String #" << casecount << endl << ans << endl;
		cout << endl;
	}
}