The C library function isgraph() checks whether a character is a graphic character or not.
Characters that have graphical representation are known are graphic characters. For example: ‘:’ ‘;’ ‘?’ ‘@’ etc.
Syntax –
#include <ctype.h> int isgraph(int ch);
Return Value – function returns nonzero if ch is any printable character other than a space, else it returns 0.
For ASCII environments, printable characters are in the range of 0X21 through 0X7E.
Code –
// code to check graphical character #include <stdio.h> #include <ctype.h> int main() { char var1 = 'g'; char var2 = ' '; char var3 = '1'; if (isgraph(var1)) printf("var1 = |%c| can be printed
", var1); else printf("var1 = |%c| can't be printed
", var1); if (isgraph(var2)) printf("var2 = |%c| can be printed
", var2); else printf("var2 = |%c| can't be printed
", var2); if (isgraph(var3)) printf("var3 = |%c| can be printed
", var3); else printf("var3 = |%c| can't be printed
", var3); return (0); } |
Output –
var1 = |g| can be printed var2 = | | can't be printed var3 = |1| can be printed
Code –
// code to print all Graphical Characters #include <stdio.h> #include <ctype.h> int main() { int i; printf("In C programming All graphic " "characters are:
"); for (i = 0; i <= 127; ++i) if (isgraph(i) != 0) printf("%c ", i); return 0; } |
Output –
In C programming All graphic characters are:
! " # $ % & ' ( ) * +, - . / 0 1 2 3 4 5 6 7 8 9
: ; ? @ A B C D E F G H I J K L M N O P Q R S T U
V W X Y Z [ ] ^ _ ` a b c d e f g h i j k l m n
o p q r s t u v w x y z { | } ~
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