ASCII stands for American Standard Code for Information Interchange
There are 256 different types of characters available in computers. Each character has their unique ASCII value.
The value range from 0 to 255. Out of the 256, first 128 are often called ASCII characters and the next 128 as Extended ASCII characters.
Most computers typically reserve 1 byte (8 bits) to represent a character in ASCII.
Following is a program to find ASCII value for each character.
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main() { int ch; for(ch=0; ch<=255; ch++) { printf("%d %c\n",ch, ch); } } |
| Types of character | Number of character |
|---|---|
| Capital letters | 26 |
| Small-case letters | 26 |
| Numbers | 10 |
| Special symbols | 32 |
| Control characters | 34 |
| Graphics characters | 128 |
ASCII value of Capital letters
| Value | Character |
|---|---|
| A | 65 |
| B | 66 |
| C | 67 |
| D | 68 |
| E | 69 |
| F | 70 |
| G | 71 |
| H | 72 |
| I | 73 |
| J | 74 |
| K | 75 |
| L | 76 |
| M | 77 |
| N | 78 |
| O | 79 |
| P | 80 |
| Q | 81 |
| R | 82 |
| S | 83 |
| T | 84 |
| U | 85 |
| V | 86 |
| W | 87 |
| X | 88 |
| Y | 89 |
| Z | 90 |
ASCII value of small-case letters
| Value | Character |
|---|---|
| a | 97 |
| b | 98 |
| c | 99 |
| d | 100 |
| e | 101 |
| f | 102 |
| g | 103 |
| h | 104 |
| i | 105 |
| j | 106 |
| k | 107 |
| l | 108 |
| m | 109 |
| n | 110 |
| o | 111 |
| p | 112 |
| q | 113 |
| r | 114 |
| s | 115 |
| t | 116 |
| u | 117 |
| v | 118 |
| w | 119 |
| x | 120 |
| y | 121 |
| z | 122 |
ASCII value of Digits
| Value | Character |
|---|---|
| 48 | 0 |
| 49 | 1 |
| 50 | 2 |
| 51 | 3 |
| 52 | 4 |
| 53 | 5 |
| 54 | 6 |
| 55 | 7 |
| 56 | 8 |
| 57 | 9 |
ASCII value of Symbols
| Value | Character |
|---|---|
| 0 | null |
| 32 | (space) |
| 33 | ! |
| 34 | “ |
| 35 | # |
| 36 | $ |
| 37 | % |
| 38 | & |
| 39 | ‘ |
| 40 | ( |
| 41 | ) |
| 42 | * |
| 43 | + |
| 44 | ‘ |
| 45 | – |
| 46 | . |
| 47 | / |
| 58 | : |
| 59 | ; |
| 60 | < |
| 61 | = |
| 62 | > |
| 63 | ? |
| 64 | @ |
| 91 | [ |
| 92 | \ |
| 93 | ] |
| 94 | ^ |
| 95 | _ |
| 96 | ` |
| 123 | { |
| 124 | | |
| 125 | } |
| 126 | ~ |