Category "c89"

C program to remove consecutive repeated characters from string

The code: https://pastebin.com/nW6A49ck /* C program to remove consecutive repeated characters from string. */ #include <stdio.h> int main() { cha

What is the difference between C, C99, ANSI C and GNU C?

I have started programming practice on codechef and have been confused by the difference between C and C99. What does C mean here? Is it C89? Check the language