Isspace String Test Function application Example

Prototype: int isspace (int c); header file: ctype.h function: Check if parameter C is a space character, that is, whether it is a space ('), a positional character (' \ t '), a CR (' \ R '), a newline (' \ n '), a vertical position character (' \v '), or a page ') situation. Return value: Returns true if the argument C is a space character, otherwise null (0) is returned. Additional notes: This is a macro definition, not a real function.

Analog Source implementation:

int isspace (int c) {    return (c = = ' | | c = = ' \ t ' | | c = = ' \ n ' | | c = = ' \ r ' | | c = = ' \f ' | | c = = ' \v ');}

Application Examples:

#include <stdio.h> #include <ctype.h>main () {    char str[]= "A3 4\t%\r8\n9 [\ve\f?";    int i = 0;    for (i=0;str[i]!=0;i++)    {        if (isspace (Str[i]))        {            printf ("%c is a space \ n", Str[i]);        }        else        {            printf ("%c is not a space \ n", Str[i]);}}        }    

Operation Result:

Isspace String Test Function application Example