result[j++] = (char)((int)c[0]^32). How to do work this code?Someone explain me.Pls,I'm confuse.

Question

public void abbre()
{
char[] c, result;
int j = 0;
c = new char[str.Length];
result = new char[str.Length];
c = str.ToCharArray();
result[j++] = (char)((int)c[0] ^ 32);