K&R C Programs Exercise 4-8

Posted on January 10, 2012June 22, 2026 by Sandeepa Nadahalli

Exercise 4-8. Suppose that there will never be more than one character of pushback. Modify getch and ungetch accordingly. The original K&R implementation uses an array buf[BUFSIZE] and an index bufp to support multiple pushed-back characters. If only one character of pushback is ever needed, the array becomes unnecessary. A single static int buf suffices …

C Program to demonstrate the ‘getchar’ function.

Posted on October 17, 2011June 19, 2026 by Sandeepa Nadahalli

The getchar() function reads a single character from standard input (the keyboard) and returns it. It is one of the simplest input functions in C and a great way to understand how the input buffer works. In this program we use getchar() in a loop to read text entered by the user and count how …