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Display ASCII Table Program in C

Introduction

ASCII (American Standard Code for Information Interchange) is a character encoding standard that represents:

  • Control characters (0–31, 127)
  • Printable characters (32–126: letters, digits, symbols, punctuation)

Each character has a unique integer value.
This program prints the ASCII values (0–127) with their corresponding characters.

 

C Program: Display ASCII Table

C 
#include <stdio.h>


 


int main() {


    int i;


 


    printf("ASCII Table (0 to 127)\n");


    printf("----------------------\n");


    printf("Dec\tChar\n");


    printf("----------------------\n");


 


    for (i = 0; i <= 127; i++) {


        // For non-printable control characters, show a placeholder


        if (i < 32 || i == 127) {


            printf("%3d\t(non-printable)\n", i);


        } else {


            printf("%3d\t%c\n", i, i);


        }


    }


 


    return 0;


}

Output

 
OUTPUT 1 :
ASCII Table (0 to 127)
----------------------
Dec Char
----------------------
  0 (non-printable)
  1 (non-printable)
  2 (non-printable)
  3 (non-printable)
  4 (non-printable)
  5 (non-printable)
  6 (non-printable)
  7 (non-printable)
  8 (non-printable)
  9 (non-printable)
 10 (non-printable)
 11 (non-printable)
 12 (non-printable)
 13 (non-printable)
 14 (non-printable)
 15 (non-printable)
 16 (non-printable)
 17 (non-printable)
 18 (non-printable)
 19 (non-printable)
 20 (non-printable)
 21 (non-printable)
 22 (non-printable)
 23 (non-printable)
 24 (non-printable)
 25 (non-printable)
 26 (non-printable)
 27 (non-printable)
 28 (non-printable)
 29 (non-printable)
 30 (non-printable)
 31 (non-printable)
 32  
 33 !
 34 "
 35 #
 36 $
 37 %
 38 &
 39 '
 40 (
 41 )
 42 *
 43 +
 44 ,
 45 -
 46 .
 47 /
 48 0
 49 1
 50 2
 51 3
 52 4
 53 5
 54 6
 55 7
 56 8
 57 9
 58 :
 59 ;
 60 <
 61 =
 62 >
 63 ?
 64 @
 65 A
 66 B
 67 C
 68 D
 69 E
 70 F
 71 G
 72 H
 73 I
 74 J
 75 K
 76 L
 77 M
 78 N
 79 O
 80 P
 81 Q
 82 R
 83 S
 84 T
 85 U
 86 V
 87 W
 88 X
 89 Y
 90 Z
 91 [
 92 \
 93 ]
 94 ^
 95 _
 96 `
 97 a
 98 b
 99 c
100 d
101 e
102 f
103 g
104 h
105 i
106 j
107 k
108 l
109 m
110 n
111 o
112 p
113 q
114 r
115 s
116 t
117 u
118 v
119 w
120 x
121 y
122 z
123 {
124 |
125 }
126 ~
127 (non-printable)
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