First things first. Isolate all the prototypes to make the main.h file and also make the README.md file with:
echo "projects description" > README.mdMain.h
#ifndef MAIN_H
#define MAIN_H
int _putchar(char c);
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);
void reverse_array(int *a, int n);
char *string_toupper(char *);
char *cap_string(char *);
char *leet(char *);
char *rot13(char *);
void print_number(int n);
char *infinite_add(char *n1, char *n2, char *r, int size_r);
void print_buffer(char *b, int size);
#endifTask 0 – 0-strcat.c
#include "main.h"
/**
* _strcat - Concatenates the string pointed to by @src,
* null byte, to the end of the string pointed to by @dest.
* @dest: A pointer to the string to be concatenated upon.
* @src: The source string to be appended to @dest.
*
* Return: A pointer to the destination string @dest.
*/
char *_strcat(char *dest, char *src)
{
int index = 0, dest_len = 0;
while (dest[index++])
dest_len++;
for (index = 0; src[index]; index++)
dest[dest_len++] = src[index];
return (dest);
}Task 1 – 1-strncat.c
#include "main.h"
/**
* _strncat - Concatenates two strings using at most
* an inputted number of bytes from src.
* @dest: The string to be appended upon.
* @src: The string to be appended to dest.
* @n: The number of bytes from src to be appended to dest.
*
* Return: A pointer to the resulting string dest.
*/
char *_strncat(char *dest, char *src, int n)
{
int index = 0, dest_len = 0;
while (dest[index++])
dest_len++;
for (index = 0; src[index] && index < n; index++)
dest[dest_len++] = src[index];
return (dest);
}Task 2 – 2-strncpy.c
#include "main.h"
/**
* _strncpy - Copies at most an inputted number
* of bytes from string src into dest.
* @dest: The buffer storing the string copy.
* @src: The source string.
* @n: The maximum number of bytes to copied from src.
*
* Return: A pointer to the resulting string dest.
*/
char *_strncpy(char *dest, char *src, int n)
{
int index = 0, src_len = 0;
while (src[index++])
src_len++;
for (index = 0; src[index] && index < n; index++)
dest[index] = src[index];
for (index = src_len; index < n; index++)
dest[index] = '\0';
return (dest);
}Task 3 – 3-strcmp.c
#include "main.h"
/**
* _strcmp - Compares pointers to two strings.
* @s1: A pointer to the first string to be compared.
* @s2: A pointer to the second string to be compared.
*
* Return: If str1 < str2, the negative difference
* If str1 == str2, 0.
* If str1 > str2, the positive difference
*/
int _strcmp(char *s1, char *s2)
{
while (*s1 && *s2 && *s1 == *s2)
{
s1++;
s2++;
}
return (*s1 - *s2);
}Task 4 – 4-rev_array.c
#include "main.h"
/**
* reverse_array - Reverses the content of an array of integers.
* @a: The array of integers to be reversed.
* @n: The number of elements in the array.
*/
void reverse_array(int *a, int n)
{
int tmp, index;
for (index = n - 1; index >= n / 2; index--)
{
tmp = a[n - 1 - index];
a[n - 1 - index] = a[index];
a[index] = tmp;
}
}Task 5 – 5-string_toupper.c
#include "main.h"
/**
* string_toupper - Changes all lowercase letters
* of a string to uppercase.
* @str: The string to be changed.
*
* Return: A pointer to the changed string.
*/
char *string_toupper(char *str)
{
int index = 0;
while (str[index])
{
if (str[index] >= 'a' && str[index] <= 'z')
str[index] -= 32;
index++;
}
return (str);
}Task 6 – 6-cap_string.c
#include "main.h"
/**
* cap_string - capitalizes all words of a string
* @s: input string.
* Return: the pointer to dest.
*/
char *cap_string(char *s)
{
int count = 0, i;
int sep_words[] = {32, 9, 10, 44, 59, 46, 33, 63, 34, 40, 41, 123, 125};
if (*(s + count) >= 97 && *(s + count) <= 122)
*(s + count) = *(s + count) - 32;
count++;
while (*(s + count) != '\0')
{
for (i = 0; i < 13; i++)
{
if (*(s + count) == sep_words[i])
{
if ((*(s + (count + 1)) >= 97) && (*(s + (count + 1)) <= 122))
*(s + (count + 1)) = *(s + (count + 1)) - 32;
break;
}
}
count++;
}
return (s);
}Task 7 – 7-leet.c
#include "main.h"
/**
* leet - Encodes a string to 1337.
* @str: The string to be encoded.
*
* Return: A pointer to the encoded string.
*/
char *leet(char *str)
{
int indx1 = 0, indx2;
char leet[8] = {'O', 'L', '?', 'E', 'A', '?', '?', 'T'};
while (str[indx1])
{
for (indx2 = 0; indx2 <= 7; indx2++)
{
if (str[indx1] == leet[indx2] ||
str[indx1] - 32 == leet[indx2])
str[indx1] = indx2 + '0';
}
indx1++;
}
return (str);
}
Footer
© 2022 GitHub, Inc.Task 8 – 100-rot13.c
#include "main.h"
/**
* rot13 - Encodes a string using rot13.
* @str: The string to be encoded.
*
* Return: A pointer to the encoded string.
*/
char *rot13(char *str)
{
int indx1 = 0, indx2;
char alphabet[52] = {'A', 'B', 'C', 'D', 'E', 'F',
'G', 'H', 'I', 'J', 'K', 'L',
'M', 'N', 'O', 'P', 'Q', 'R',
'S', 'T', 'U', 'V', 'W', 'X',
'Y', 'Z', 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j',
'k', 'l', 'm', 'n', 'o', 'p',
'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z'};
char rot13key[52] = {'N', 'O', 'P', 'Q', 'R', 'S',
'T', 'U', 'V', 'W', 'X', 'Y',
'Z', 'A', 'B', 'C', 'D', 'E',
'F', 'G', 'H', 'I', 'J', 'K',
'L', 'M', 'n', 'o', 'p', 'q',
'r', 's', 't', 'u', 'v', 'w',
'x', 'y', 'z', 'a', 'b', 'c',
'd', 'e', 'f', 'g', 'h', 'i',
'j', 'k', 'l', 'm'};
while (str[indx1])
{
for (indx2 = 0; indx2 < 52; indx2++)
{
if (str[indx1] == alphabet[indx2])
{
str[indx1] = rot13key[indx2];
break;
}
}
indx1++;
}
return (str);
}Task 9 – 101-print_number.c
#include "main.h"
/**
* print_number - Prints an integer.
* @n: The integer to be printed.
*/
void print_number(int n)
{
unsigned int num = n;
if (n < 0)
{
_putchar('-');
num = -num;
}
if ((num / 10) > 0)
print_number(num / 10);
_putchar((num % 10) + '0');
}Task 10 – 102-magic.c
#include <stdio.h>
int main(void)
{
int n;
int a[5];
int *p;
a[2] = 1024;
p = &n;
/*
* write your line of code here...
* Remember:
* - you are not allowed to use a
* - you are not allowed to modify p
* - only one statement
* - you are not allowed to code anything else than this line of code
*/
*(p + 5) = 98;
/* ...so that this prints 98\n */
printf("a[2] = %d\n", a[2]);
return (0);
}Task 11 – 103-infinite_add.c
#include "main.h"
char *add_strings(char *n1, char *n2, char *r, int r_index);
char *infinite_add(char *n1, char *n2, char *r, int size_r);
/**
* add_strings - Adds the numbers stored in two strings.
* @n1: The string containing the first number to be added.
* @n2: The string containing the second number to be added.
* @r: The buffer to store the result.
* @r_index: The current index of the buffer.
*
* Return: If r can store the sum - a pointer to the result.
* If r cannot store the sum - 0.
*/
char *add_strings(char *n1, char *n2, char *r, int r_index)
{
int num, tens = 0;
for (; *n1 && *n2; n1--, n2--, r_index--)
{
num = (*n1 - '0') + (*n2 - '0');
num += tens;
*(r + r_index) = (num % 10) + '0';
tens = num / 10;
}
for (; *n1; n1--, r_index--)
{
num = (*n1 - '0') + tens;
*(r + r_index) = (num % 10) + '0';
tens = num / 10;
}
for (; *n2; n2--, r_index--)
{
num = (*n2 - '0') + tens;
*(r + r_index) = (num % 10) + '0';
tens = num / 10;
}
if (tens && r_index >= 0)
{
*(r + r_index) = (tens % 10) + '0';
return (r + r_index);
}
else if (tens && r_index < 0)
return (0);
return (r + r_index + 1);
}
/**
* infinite_add - Adds two numbers.
* @n1: The first number to be added.
* @n2: The second number to be added.
* @r: The buffer to store the result.
* @size_r: The buffer size.
*
* Return: If r can store the sum - a pointer to the result.
* If r cannot store the sum - 0.
*/
char *infinite_add(char *n1, char *n2, char *r, int size_r)
{
int index, n1_len = 0, n2_len = 0;
for (index = 0; *(n1 + index); index++)
n1_len++;
for (index = 0; *(n2 + index); index++)
n2_len++;
if (size_r <= n1_len + 1 || size_r <= n2_len + 1)
return (0);
n1 += n1_len - 1;
n2 += n2_len - 1;
*(r + size_r) = '\0';
return (add_strings(n1, n2, r, --size_r));
}Task 12 – 104-print_buffer.c
#include "main.h"
#include <stdio.h>
/**
* print_buffer - Prints a buffer 10 bytes at a time, starting with
* the byte position, then showing the hex content,
* then displaying printable charcaters.
* @b: The buffer to be printed.
* @size: The number of bytes to be printed from the buffer.
*/
void print_buffer(char *b, int size)
{
int byte, index;
for (byte = 0; byte < size; byte += 10)
{
printf("%08x: ", byte);
for (index = 0; index < 10; index++)
{
if ((index + byte) >= size)
printf(" ");
else
printf("%02x", *(b + index + byte));
if ((index % 2) != 0 && index != 0)
printf(" ");
}
for (index = 0; index < 10; index++)
{
if ((index + byte) >= size)
break;
else if (*(b + index + byte) >= 31 &&
*(b + index + byte) <= 126)
printf("%c", *(b + index + byte));
else
printf(".");
}
if (byte >= size)
continue;
printf("\n");
}
if (size <= 0)
printf("\n");
}README.md
echo "All the project purpose" > README.md
