Question

I have char* myChar = "HELLO". I would like to switch the places of the E and the O. I tried doing myChar[1] = myChar[4], but that doesn’t work. Please help!

Answer 1

First off, that string literal is probably being stored in read-only memory. You can fix that by declaring the string as an array of characters:

char myChar[] = "HELLO";

To swap the characters, you’ll have to use a temporary variable:

char c1 = myChar[1];
myChar[1] = myChar[4];
myChar[4] = c1;