The isspace(), iscntrl(), ispunct(), isprint() and isgraph() C functions usage

 

Compiler: Visual C++ Express Edition 2005

Compiled on Platform: Windows 2003 Server Standard Edition

Header file: Standard

Additional library: none/default

Additional project setting: Set project to be compiled as C

Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C Code (/TC)

Other info:

To do: Testing the C characters using the isspace(), iscntrl(), ispunct(), isprint() and isgraph() C functions

To show: The isspace(), iscntrl(), ispunct(), isprint() and isgraph() C functions usage

 

 

// using functions isspace(), iscntrl(), ispunct(), isprint(), isgraph()

#include <stdio.h>

#include <string.h>

 

int main(void)

{

printf("using functions isspace(), iscntrl(),\n");

printf("ispunct(), isprint(), isgraph()\n");

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

printf("According to isspace():\n");

isspace('\n') ? printf("Newline is a whitespace character\n") :

printf("Newline is not a whitespace character\n");

isspace('\t') ? printf("Horizontal tab is a whitespace character\n") :

printf("Horizontal tab is not a whitespace character\n");

isspace('%') ? printf("%% is a whitespace character\n") :

printf("%% is not a whitespace character\n");

printf("\nAccording to iscntrl():\n");

iscntrl('\n') ? printf("Newline is a control character\n") :

printf("Newline is not a control character\n");

iscntrl('$') ? printf("$ is a control character\n") :

printf("$ is not a control character\n");

printf("\nAccording to ispunct():\n");

ispunct('y') ? printf("y is a punctuation character\n") :

printf("y is not a punctuation character\n");

ispunct('\'') ? printf("\' is a punctuation character\n") :

printf("\' is not a punctuation character\n");

ispunct('"') ? printf("\" is a punctuation character\n") :

printf("\" is not a punctuation character\n");

printf("\nAccording to isprint():\n");

isprint('$') ? printf("$ is a printing character\n") :

printf("$ is not a printing character\n");

isprint('\a') ? printf("Alert is a printing character\n") :

printf("Alert is not a printing character\n");

printf("\nAccording to isgraph():\n");

isgraph('Q') ? printf("Q is a printing character other than a space\n") :

printf("Q is not a printing character other than a space\n");

isgraph(' ') ? printf("Space is a printing character other than a space\n"):

printf("Space is not a printing character other than a space\n");

 

return 0;

}

 

Output example:

 

using functions isspace(), iscntrl(),

ispunct(), isprint(), isgraph()

-------------------------------------

According to isspace():

Newline is a whitespace character

Horizontal tab is a whitespace character

% is not a whitespace character

According to iscntrl():

Newline is a control character

$ is not a control character

According to ispunct():

y is not a punctuation character

' is a punctuation character

" is a punctuation character

According to isprint():

$ is a printing character

Alert is not a printing character

According to isgraph():

Q is a printing character other than a space

Space is not a printing character other than a space

Press any key to continue . . .

 

 

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