Appendix B: Standard Library Cheatsheet

Table of Contents

• Table of Contents
• B.1 Input/Output
• B.2 String Handling
• B.3 Memory Management
• B.4 Math Functions
• B.5 Exercises
• B.6 Solutions

B.1 Input/Output

• printf, scanf from <stdio.h>
• fopen, fclose, fgets, fputs

B.2 String Handling

• strcpy, strncpy, strlen, strcmp, strcat from <string.h>

B.3 Memory Management

• malloc, calloc, realloc, free from <stdlib.h>

B.4 Math Functions

• abs, sqrt, pow, sin, cos from <math.h>

B.5 Exercises

1. Which function copies one string to another?
2. How do you allocate memory for 10 integers?
3. Which header provides file I/O functions?

B.6 Solutions

B.6.1 Solution 1

strcpy or strncpy.

B.6.2 Solution 2

malloc(10 * sizeof(int));

B.6.3 Solution 3

<stdio.h>