How to use isspace() function in C?
The below example demonstrates how to use the isspace() function in C language:
C
// C program to illustrate the syntax of isspace function #include <ctype.h> #include <stdio.h> int main() { // declaring a char variable to be tested char ch1 = ' '; char ch2 = 'a'; // checking ch1 if (isspace(ch1)) printf("Entered character is space\n"); else printf("Entered character %c is not space", ch1); // checking ch2 if (isspace(ch2)) printf("Entered character is space\n"); else printf("Entered character %c is not space\n", ch2); return 0; } |
Output
Entered character is space Entered character a is not space
The space is not the only whitespace character in the C language. There are more whitespace characters which are as follows:
|
Character |
Name |
|---|---|
|
‘ ‘ |
Space |
|
‘\t’ |
Horizontal Tab |
|
‘\n’ |
Newline |
|
‘\v’ |
Vertical Tab |
|
‘\f’ |
Feed |
|
‘\r’ |
Carriage Return |
isspace() in C
The isspace() in C is a predefined function used for string and character handling. This function is used to check if the argument contains any whitespace characters. It is declared inside <ctype.h> header file.
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