fork download
copy 
  1. /* Experiment to find out what happens when prints's argument string contains \c, where c is some
  2. character not listed above. */
  3.  
  4. #include<stdio.h>
  5. int main(void)
  6. {
  7.     printf("a:\a"); /* valid */
  8.     printf("b:\b"); /* valid */
  9.     printf("c:\c");
  10.     printf("d:\d");
  11.     printf("e:\e"); /* valid */
  12.     printf("f:\f"); /* valid */
  13.     printf("g:\g");
  14.     printf("h:\h");
  15.     printf("i:\i");
  16.     printf("j:\j");
  17.     printf("k:\k");
  18.     printf("l:\l");
  19.     printf("m:\m");
  20.     printf("n:\n"); /* valid */
  21.     printf("o:\o");
  22.     printf("p:\p");
  23.     printf("q:\q");
  24.     printf("r:\r"); /* valid */
  25.     printf("s:\s");
  26.     printf("t:\t"); /* valid */
  27.     /*
  28.     * \u below stands for unicode.
  29.     * warning: universal character names are only valid in C++ and C99
  30.     * without anything it will give the error incomplete universal character.
  31.     * we will give 2603 unicode codepoint which stands for snowman
  32.     */
  33.     printf("u:\u2603"); /* valid */
  34.     printf("v:\v"); /* valid */
  35.     printf("w:\w");
  36.     /* \x is for hexadecimals. It should be followed by valid hexadecimal.
  37.      * Lets give D as hexadecimal value */
  38.     printf("x:\xD"); /* valid */
  39.     printf("y:\y");
  40.     printf("z:\z");
  41.     printf("A:\A");
  42.     printf("B:\B");
  43.     printf("C:\C");
  44.     printf("D:\D");
  45.     printf("E:\E"); /* valid */
  46.     printf("F:\F");
  47.     printf("G:\G");
  48.     printf("H:\H");
  49.     printf("I:\I");
  50.     printf("J:\J");
  51.     printf("K:\K");
  52.     printf("L:\L");
  53.     printf("M:\M");
  54.     printf("N:\N");
  55.     printf("O:\O");
  56.     printf("P:\P");
  57.     printf("Q:\Q");
  58.     printf("R:\R");
  59.     printf("S:\S");
  60.     printf("T:\R");
  61.  
  62.     /*
  63.     * \U below stands for unicode.
  64.     * error: incomplete universal character name \U
  65.     * without anything it will give the error incomplete universal character.
  66.     * we will give 2603 unicode codepoint which stands for snowman
  67.     */
  68.  
  69.     printf("U:\U00002603");
  70.     printf("V:\V");
  71.     printf("W:\W");
  72.     printf("X:\X");
  73.     printf("Y:\Y");
  74.     printf("Z:\Z");
  75.     printf("0:\0");
  76.     printf("1:\1"); /* valid */+
  77.     printf("2:\2"); /* valid */
  78.     printf("3:\3"); /* valid */
  79.     printf("4:\4"); /* valid */
  80.     printf("5:\5"); /* valid */
  81.     printf("6:\6"); /* valid */
  82.     printf("7:\7"); /* valid */
  83.     printf("8:\8");
  84.     printf("9:\9");
  85.     printf("~:\~");
  86.     printf("`:\`");
  87.     printf("!:\!");
  88.     printf("@:\@");
  89.     printf("#:\#");
  90.     printf("$:\$");
  91.     printf("%:\%"); /* warning: unknown conversion type character in : in format. Spurious trailing % in format */
  92.     printf("^:\^"); /* warning: unknown escape sequence \^ */
  93.     printf("&:\&");
  94.     printf("*:\*");
  95.     printf("(:\("); /* valid */
  96.     printf("):\)");
  97.     printf("_:\_");
  98.     printf("-:\-");
  99.     printf("+:\+");
  100.     printf("{:\{"); /* valid */
  101.     printf("[:\["); /* valid */
  102.     printf("}:\}");
  103.     printf("]:\]");
  104.     printf("|:\|");
  105.     printf("\:\\");
  106.     printf("a:\a"); /* valid */
  107.     printf("::\:");
  108.     printf(";:\;");
  109.     /* escape the double-quotes */
  110.     printf("\":\""); /* valid */
  111.     printf("':\'"); /* valid */
  112.     printf("<:\<");
  113.     printf(",:\,");
  114.     printf(">:\>");
  115.     printf(".:\.");
  116.     printf("?:\?"); /* valid */
  117.     printf("/:\/");
  118. }
  119.  
  120.  
Success #stdin #stdout 0s 2112KB
comments (?)
stdin
copy 
a
stdout
copy 
a:b:c:cd:de:f:g:gh:hi:ij:jk:kl:lm:mn:
o:op:pq:qr:
s:st:	u:☃v:w:wx:
y:yz:zA:AB:BC:CD:DE:F:FG:GH:HI:IJ:JK:KL:LM:MN:NO:OP:PQ:QR:RS:ST:RU:☃V:VW:WX:XY:YZ:Z0:1:2:3:4:5:6:7:8:89:9~:~`:`!:!@:@#:#$:$%:%^:^&:&*:*(:():)_:_-:-+:+{:{[:[}:}]:]|:|:\a::::;:;":"':'<:<,:,>:>.:.?:?/:/
https://ideone.com/Pgc1Km
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!