We have already provided solutions to all the exercises in the book “C Programming Language (2nd Edition)“ popularly known as K & R C book. In this blog post I will give links to all the chapters of the “C Programming Language (2nd Edition)” popularly known as K & R C book for easy reference. Chapter …
Chapter 7: Input and Output covers the standard I/O library in depth — formatted output with printf, formatted input with scanf, file access with fopen/fclose, line I/O with fgets/fputs, and error handling via stderr. The chapter also introduces variable-argument functions (stdarg.h) through a worked minprintf example. The exercises range from practical utilities (a case-converter, a …
Chapter 6: Structures introduces struct, typedef, and self-referential structures (linked lists, binary trees). The chapter builds a word-frequency counter using a binary tree, then extends it with a hash table. Exercise 6-3 adds a cross-reference listing; 6-6 implements a rudimentary #define processor using a hash table — the most complex exercise in this chapter. These …
Chapter 5: Pointers and Arrays is the chapter C beginners fear most — and with reason. K&R covers pointer arithmetic, the equivalence between pointers and arrays, pointers to functions, and multi-dimensional arrays. The exercises build real utilities: getfloat, strncpy/strncat/strncmp from scratch, a tail command, a sort program with -r/-n/-f/-d flags, and a full C declaration …
Chapter 4: Functions and Program Structure is where K&R builds a non-trivial program: a reverse Polish notation (RPN) calculator. The exercises extend it — adding modulo, unary minus, variables, and last-printed-value recall. Other exercises cover recursive printd, recursive itoa, and the C preprocessor. Exercise 4-12 (recursive itoa) and 4-13 (recursive reverse) are elegance tests. These …
Chapter 3: Control Flow covers C’s branching and looping constructs. It is short (6 exercises) but the exercises are non-trivial: exercise 3-3 implements expand(s1,s2) to expand shorthand like a-z into the full alphabet; 3-4 handles itoa for the most negative integer (a classic overflow trap); 3-5 converts integers to arbitrary bases. These are worked solutions …