Printing '%' with printf in C/C++

Answer 1

printf("A: %.2f%%", pc);

Answer 2

just double the '%' in the format string and it will print '%'

Answer 3

%% will output % using printf. Check the example at the end of page here

Answer 4

For future printf reference, type:

man 3 printf

on any linux command prompt. It can do a LOT of crazy stuff that most people just aren't aware of.