characters.c

/**
 * Fail:        characters.c
 * Author:      Risto Heinsar
 * Created:     06.11.2014
 * Modified:    30.11.2021
 *
 * Description: The example shows that characters in C are nothing
 *              but just numbers from ASCII table and how they can be
 *              manipulated one character at a time.
 */

#include <stdio.h>

int main(void)
{
    char character1 = 'a';
    char character2 = 65;
    printf("Characters are just numbers based on ASCII table:\n");
    printf("(%c %hhd)\n", character1, character1); // windowsis %hd
	printf("(%c %hhd)", character2, character2);
	printf("\n\n");

    char character3 = character1 + 1;
    printf("You can do basic math with characters: %c + 1 -> %c\n\n",
           character1, character3);

    char character4 = character1 - 32;
    printf("Upper and lower case characters have an offset of 32. "
           "Notice that it's only a single bit (2^5) "
           "%c - 32 -> %c\n\n", character1, character4);

    char word[] = "cafe";
    word[2] = 'k';
    printf("Text is just an array of characters that can be indexed"
           " and manipulated one character at a time.\n"
           "The %s is a lie.\n\n", word);

    char string[] = "Text manipulation";
    string[4] = '\0';
    printf("The end of the string is denoted by a zero-terminator. "
           "Where-ever it is put, that's where the string is considered "
           "to end. E.g. if i put it in the middle of a word: %s\n\n", string);
    printf("You don't also need to start printing from the beginning: %s\n",
           &string[5]);

    printf("I can also print characters from a string: %c%c%c%c\n",
           string[0], string[1], string[2], string[3]);

    return 0;
}

/**

* Fail: characters.c

* Author: Risto Heinsar

* Created: 06.11.2014

* Modified: 30.11.2021

* Description: The example shows that characters in C are nothing

* but just numbers from ASCII table and how they can be

* manipulated one character at a time.

#include <stdio.h>

int main(void)

{

char character1 = 'a';

char character2 = 65;

printf("Characters are just numbers based on ASCII table:\n");

printf("(%c %hhd)\n", character1, character1); // windowsis %hd

printf("(%c %hhd)", character2, character2);

printf("\n\n");

char character3 = character1 + 1;

printf("You can do basic math with characters: %c + 1 -> %c\n\n",

character1, character3);

char character4 = character1 - 32;

printf("Upper and lower case characters have an offset of 32. "

"Notice that it's only a single bit (2^5) "

"%c - 32 -> %c\n\n", character1, character4);

char word[] = "cafe";

word[2] = 'k';

printf("Text is just an array of characters that can be indexed"

" and manipulated one character at a time.\n"

"The %s is a lie.\n\n", word);

char string[] = "Text manipulation";

string[4] = '\0';

printf("The end of the string is denoted by a zero-terminator. "

"Where-ever it is put, that's where the string is considered "

"to end. E.g. if i put it in the middle of a word: %s\n\n", string);

printf("You don't also need to start printing from the beginning: %s\n",

&string[5]);

printf("I can also print characters from a string: %c%c%c%c\n",

string[0], string[1], string[2], string[3]);

return 0;

}