Please comment this code so I can understand it better. Thanks!

#include #include

#define KEY '&'

int main() { int orig_char,new_char;

while((orig_char=getchar())!=EOF){ new_char=orig_char^KEY; if(isprint(orig_char)&&isprint(new_char)) putchar(new_char); else putchar(orig_char); }

return 0; }