- Allowed editors: vi, vim, emacs
- All your files will be compiled on Ubuntu 14.04 LTS
- Your programs and functions will be compiled with gcc 4.8.4 using the flags -Wall -Werror -Wextra and -pedantic
- All your files should end with a new line
- A README.md file, at the root of the folder of the project is mandatory
- Your code should use the Betty style. It will be checked using betty-style.pl and betty-doc.pl
- You are not allowed to use global variables
- No more than 5 functions per file
- The only C standard library functions allowed are malloc, free and exit. Any use of functions like printf, puts, calloc, realloc etc… is forbidden
- You are allowed to use _putchar
- You don’t have to push _putchar.c, we will use our file. If you do it won’t be taken into account
- In the following examples, the main.c files are shown as examples. You can use them to test your functions, but you don’t have to push them to your repo (if you do we won’t take them into account). We will use our own main.c files at compilation. Our main.c files might be different from the one shown in the examples
- The prototypes of all your functions and the prototype of the function _putchar should be included in your header file called holberton.h
- Don’t forget to push your header file
- All your header files should be include guarded
0. Beauty is variable, ugliness is constant
File: 0-sum_them_all.c
Write a function that returns the sum of all its parameters.
- Prototype: int sum_them_all(const unsigned int n, ...);
- If n == 0, return 0
julien@ubuntu:~/0x0f. variadic functions$ cat 0-main.c
#include <stdio.h>
#include "variadic_functions.h"
/**
* main - check the code for Holberton School students.
*
* Return: Always 0.
*/
int main(void)
{
int sum;
sum = sum_them_all(2, 98, 1024);
printf("%d\n", sum);
sum = sum_them_all(4, 98, 1024, 402, -1024);
printf("%d\n", sum);
return (0);
}
julien@ubuntu:~/0x0f. variadic functions$ gcc -Wall -pedantic -Werror -Wextra 0-main.c 0-sum_them_all.c -o a
julien@ubuntu:~/0x0f. variadic functions$ ./a
1122
500
julien@ubuntu:~/0x0f. variadic functions$ 1. To be is to be the value of a variable
File: 1-print_numbers.c
Write a function that prints numbers, followed by a new line.
- Prototype: void print_numbers(const char *separator, const unsigned int n, ...);
- where separator is the string to be printed between numbers
- and n is the number of integers passed to the function
- You are allowed to use printf
- If separator is NULL, don’t print it
- Print a new line at the end of your function
julien@ubuntu:~/0x0f. variadic functions$ cat 1-main.c
#include "variadic_functions.h"
/**
* main - check the code for Holberton School students.
*
* Return: Always 0.
*/
int main(void)
{
print_numbers(", ", 4, 0, 98, -1024, 402);
return (0);
}
julien@ubuntu:~/0x0f. variadic functions$ gcc -Wall -pedantic -Werror -Wextra 1-main.c 1-print_numbers.c -o b
julien@ubuntu:~/0x0f. variadic functions$ ./b
0, 98, -1024, 402
julien@ubuntu:~/0x0f. variadic functions$ 2. One woman's constant is another woman's variable
File: 2-print_strings.c
Write a function that prints strings, followed by a new line.
- Prototype: void print_strings(const char *separator, const unsigned int n, ...);
- where separator is the string to be printed between the strings
- and n is the number of strings passed to the function
- You are allowed to use printf
- If separator is NULL, don’t print it
- If one of the string is NULL, print (nil) instead
- Print a new line at the end of your function
julien@ubuntu:~/0x0f. Variadic functions$ cat 2-main.c
#include "variadic_functions.h"
/**
* main - check the code for Holberton School students.
*
* Return: Always 0.
*/
int main(void)
{
print_strings(", ", 2, "Jay", "Django");
return (0);
}
julien@ubuntu:~/0x0f. Variadic functions$ gcc -Wall -pedantic -Werror -Wextra 2-main.c 2-print_strings.c -o c
julien@ubuntu:~/0x0f. Variadic functions$ ./c
Jay, Django
julien@ubuntu:~/0x0f. Variadic functions$ 3. To be is a to be the value of a variable
File: 3-print_all.c
Write a function that prints anything.
- Prototype: void print_all(const char * const format, ...);
- where format is a list of types of arguments passed to the function c: char i: integer f: float s: char * (if the string is NULL, print (nil) instead any other char should be ignored see example
- You are not allowed to use for, goto, ternary operator, else, do ... while
- You can use a maximum of 2 while loops 2 if
- You can declare a maximum of 9 variables
- You are allowed to use printf
- Print a new line at the end of your function
julien@ubuntu:~/0x0f. Variadic functions$ cat 3-main.c
#include "variadic_functions.h"
/**
* main - check the code for Holberton School students.
*
* Return: Always 0.
*/
int main(void)
{
print_all("ceis", 'H', 0, "lberton");
return (0);
}
julien@ubuntu:~/0x0f. Variadic functions$ gcc -Wall -pedantic -Werror -Wextra 3-main.c 3-print_all.c -o d
julien@ubuntu:~/0x0f. Variadic functions$ ./d
H, 0, lberton
julien@ubuntu:~/0x0f. Variadic functions$ 4. Real programmers can write assembly code in any language
File: 100-hello_holberton.asm
Write a 64-bit program in assembly that prints Hello, Holberton, followed by a new line.
- You are only allowed to use the system call write (use int or syscall, not a call)
- Your program will be compiled using nasm and gcc (as follows)
julien@ubuntu:~/0x0f. Variadic functions$ nasm -f elf64 100-hello_holberton.asm && gcc 100-hello_holberton.o -o hello
julien@ubuntu:~/0x0f. Variadic functions$ ./hello
Hello, Holberton
julien@ubuntu:~/0x0f. Variadic functions$