using System;
class MainClass
{
public static void UpperCaseThisString(ref string s)
{
s = s.ToUpper();
}
public static void Main()
{
string s = "str";
Console.WriteLine("-> Before: {0}", s);
UpperCaseThisString(ref s);
Console.WriteLine("-> After: {0}\n", s);
}
}
- Before: str
- After: STR