README.md

C - Dynamic libraries

In this project, learned about using dynamic libraries in C, including how to create them and how to use them with $LD_LIBRARY_PATH, nm, ldd, and ldconfig.

Tests ✔️

• tests: Folder of test files. Provided by Holberton School.

Tasks 📃

• 0. A library is not a luxury but one of the necessities of life

  • libholberton.so: C dynamic library containing all the functions listed below:

    • int _putchar(char c);
    • int _islower(int c);
    • int _isalpha(int c);
    • int _abs(int n);
    • int _isupper(int c);
    • int _isdigit(int c);
    • int _strlen(char *s);
    • void _puts(char *s);
    • char *_strcpy(char *dest, char *src);
    • int _atoi(char *s);
    • char *_strcat(char *dest, char *src);
    • char *_strncat(char *dest, char *src, int n);
    • char *_strncpy(char *dest, char *src, int n);
    • int _strcmp(char *s1, char *s2);
    • char *_memset(char *s, char b, unsigned int n);
    • char *_memcpy(char *dest, char *src, unsigned int n);
    • char *_strchr(char *s, char c);
    • unsigned int _strspn(char *s, char *accept);
    • char *_strpbrk(char *s, char *accept);
    • char *_strstr(char *haystack, char *needle);

  • holberton.h: Header file containing the prototypes of all functions included in libholberton.so.

• 1. Without libraries what have we? We have no past and no future

  • 1-create_dynamic_lib.sh: Bash script that creates a dynamic library called liball.so from all the .c files in the current directory.

• 2. Let's call C functions from Python

  • 100-operations.so: C dynamic library containing basic C mathematical operation functions that can be called from Python.
  • Includes:
    • int add(int a, int b);
    • int sub(int a, int b);
    • int mul(int a, int b);
    • int div(int a, int b);
    • int mod(int a, int b);