# ispunct() function in C

## Using the `ispunct()` function in C

The `ispunct()` function in C is used to check whether a character is a punctuation character. The function takes a character as input and returns a non-zero value if the character is a punctuation character, or zero if the character is not a punctuation character.

A punctuation character is a character that is used to separate words or clauses in a sentence. Some examples of punctuation characters are:

* Period (.)
    
* Comma (,)
    
* Question mark (?)
    
* Exclamation point (!)
    
* Apostrophe (‘)
    
* Quotation mark (” or ‘)
    
* Hyphen (-)
    
* Dash (-)
    
* Slash (/)
    
* Backslash ()
    

Here is an example of how to use the `ispunct()` function:

```c
#include <stdio.h>
#include <stdint.h>
#include <ctype.h>

int32_t main(int32_t argc, char const *argv[])
{
    char c = ',';

    int32_t result = ispunct(c);

    if (result > 0x00)
    {
        printf("The character '%c' is a punctuation character.\n", c);
    }
    else
    {
        printf("The character '%c' is not a punctuation character.\n", c);
    }

    return 0;
}
```

The `ispunct()` function takes a character as input and returns a non-zero value if the character is a punctuation character, or zero if the character is not a punctuation character. In this example, the character `'.'` is a punctuation character, so the function will return a non-zero value and the `printf()` statement will print the output.

Explore the complete list of functions available in [ctype header in C standard library](https://syntaxspace.com/c-library-ctype_h-functions).