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digital:programmieren:c [2019/01/08 17:45]
natrius 		digital:programmieren:c [2022/02/22 16:44]
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 # C # C
 +
 Zusammenfassung für nützliche Sachen beim Programmieren mit C. Zusammenfassung für nützliche Sachen beim Programmieren mit C.
  
 ## Ressourcen ## Ressourcen
 +
 +  * https://github.com/kozross/awesome-c#learning-reference-and-tutorials
   * https://de.wikibooks.org/wiki/C-Programmierung   * https://de.wikibooks.org/wiki/C-Programmierung
   * http://www.code-in-c.com/galton-board-in-c/   * http://www.code-in-c.com/galton-board-in-c/
   * http://www.c-howto.de/tutorial/einfuehrung/   * http://www.c-howto.de/tutorial/einfuehrung/
 +  * http://www.vazgames.com/retro/CPROG.htm
 +  * http://ergodic.ugr.es/cphys_pedro/c/c/ccourse.html
 +  * ALGORITHMS http://www-igm.univ-mlv.fr/~lecroq/string/index.html
 +  * Propositional Logic: Introduction https://www.youtube.com/watch?v=qV4htTfow-E&list=PL619166130C21EADA
 +  * https://www.gnu.org/software/libc/manual/html_node/Getopt.html
 +  * Allgemein, MultiOS-Gamedev: https://gist.github.com/flibitijibibo/b67910842ab95bb3decdf89d1502de88
 +  * https://www.reddit.com/r/C_Programming/comments/cep9zl/c_skill_tree_visual_guide_for_c_resources/
 +  * Structure my program https://www.reddit.com/r/C_Programming/comments/cadkxr/c_programming_beginner_needs_help/?sort=top
 +  * https://www.reddit.com/r/C_Programming/comments/b3f9n5/i_created_a_simple_tictactoe_game_and_am_looking/?sort=top
 +  * http://sekrit.de/webdocs/c/beginners-guide-away-from-scanf.html
 +  * http://rosettacode.org/wiki/Category:Programming_Tasks
 +
 +### Starting a project, planning
 +
 +  * https://www.quora.com/How-do-I-start-my-own-programming-projects-1
 +  * https://www.codeconquest.com/programming-projects/
 +  * https://www.khanacademy.org/computing/computer-programming/programming/good-practices/a/planning-a-programming-project
 +
 +### Games
 +
 +  * https://www.codingame.com/home
 +  * https://www.coderbyte.com/
 +  * https://www.reddit.com/r/C_Programming/comments/c3ap6f/i_just_started_a_new_project_on_github_with_code/?sort=top
 +  * https://projecteuler.net/
 +  * https://www.reddit.com/r/dailyprogrammer/
 +  * https://www.hackerrank.com/
 +  * paid? - https://www.topcoder.com/
 +
 +## Cheat Sheet
 +
 +### Main Function
 +
 +<code c>
 +void main(void) {
 +
 +}
 +</code>
 +
 +### Printf
 +
 +<code c>
 +#include <stdio.h>
 +
 +void main(void) {
 +    int i = 1;
 +    unsigned u = 2;
 +    long l = 3;
 +    float f = 4.0;
 +    double d = 5.0;
 +    char c = 6;
 +    unsigned char uc = 7;
 +
 +    printf("i = %d, u = %u, l = %l, f = %f, d = %lf, c = %c, c = %d, uc = %d\n",
 +            i, u, l, f, d, c, c, uc);
 +
 +    printf("print a tab by \t and new line by \n");
 +
 +}
 +</code>
 +
 +### Scanf
 +
 +<code c>
 +#include <stdio.h>
 +
 +void main(void) {
 +   int i;
 +
 +   printf("Print a prompt for i\n");
 +   scanf("%d", &i);
 +
 +}
 +</code>
 +
 +### Conditionals
 +
 +<code c>
 +if(flag) {
 +   // put some statements here to execute if flag is true (flag != 0)
 +} 
 +
 +if(flag) {
 +   // put some statements here to execute if flag is true (flag != 0)
 +} else {
 +   // put some statements here to execute if flag is false (flag == 0)
 +}
 +
 +switch(flag) {
 +    case 0:  // statements
 +    break;
 +    case 1:  // statements
 +  break;
 +    case 2:  // statements
 +  break;
 +    default:  // statements
 +
 +}
 +</code>
 +
 +### Looping
 +
 +<code c>
 +while(flag) {
 +    // make sure there is some statement in here to change flag to become false.
 +}
 +
 +for(i = 0; i < LAST; i++) {
 +    // statements
 +}
 +</code>
 +
 +### Math Functions
 +
 +<code c>
 +#include <math.h>
 +
 +void main(void) {
 +    double th = pi/2;    // th is in radians
 +    double x, y;
 +
 +    x = cos(th);
 +    y = sin(th);
 +    th = atan2(y, x);
 +}
 +</code>
 +
 +### Creating Functions
 +
 +<code c>
 +int functionname(type1 input1, ... , typeN *output1, ...);     // this is the function prototype with the ;
 +int functionname(type1 input1, ... , typeN *output1, ...)
 +{
 +    *output1 = // some function of the input variables.
 +    *output2 = // some function of the input varialbles.
 +    ...
 +    return(someintvalue);
 +}
 +</code>
  
 ## Input seperated with space or / ## Input seperated with space or /