Objective-C Programming: The Big Nerd Ranch Guide

String literals

If you were dealing with C strings a lot, malloc-ing the memory and stuffing the characters in one by one would be a real pain. Instead, you can create a pointer to a string of characters (terminated with the zero character) by putting the string in quotes. Change your code to use a string literal:

int main (int argc, const char * argv[])
{
    char x = '!'; // The character '!'

    while (x <= '~') { // The character '~'
        printf("%x is %c\n", x, x);
        x++;
    }

    char *start = "Love";
    printf("%s has %zu characters\n", start, strlen(start));
    printf("The third letter is %c\n", start[2]);

    return 0;
}

Build it and run it.

Notice that you do not need to malloc and free memory for a string literal. It is a constant and appears in memory ...