iswpunct() function in C/C++

The iswpunct() is a function in C/C++ which test whether Wide-Character code is representing a character of class punct in the program’s current locale. It returns non-zero if Wide-Character is a punctuation wide-character code, otherwise, it shall return 0. This function is defined in cwctype header file.The function checks if ch is a punctuation character or not.The Punctuation characters are as follows 

! " # $ % & ' () * +, - . / : ;  ? @ [\] ^ _ ` {|} ~

Syntax :

int iswpunct(ch)

Parameters: The function accepts a single mandatory parameter ch which specifies the character to be checked.

Return Value: The function returns a non-zero value if character ch is a punctuation character else it returns zero. 

Below program illustrate the above function:  

C++

// C++ program to illustrate
// the iswpunct() function
#include <iostream>
using namespace std;

int main()
{
    int i = 0;
    int count_ = 0;

    // string declaration
    char string1[] = "~Hello geekforgeeks !";
    char string2[count_];

    // iterate in the string
    while (string1[i]) {

        // check if the character is
        // punctuation mark or not
        if (iswpunct(string1[i])) {

            // store the punctuation characters
            string2[count_] = string1[i];
            count_++;
        }
        i++;
    }

    // prints the punctuation character
    cout <<"The sentence contains" <<  count_ <<"punct. character :\n";
    for (int i = 0; i < count_; i++)
        cout <<" "<< string2[i];
    return 0;
}

// This code is contributed by shivanisinghss2110

C

// C++ program to illustrate
// the iswpunct() function
#include <stdio.h>
int main()
{
    int i = 0;
    int count_ = 0;

    // string declaration
    char string1[] = "~Hello geekforgeeks !";
    char string2[count_];

    // iterate in the string
    while (string1[i]) {

        // check if the character is
        // punctuation mark or not
        if (iswpunct(string1[i])) {

            // store the punctuation characters
            string2[count_] = string1[i];
            count_++;
        }
        i++;
    }
    // prints the punctuation character
    printf("The sentence contains %d punct. character :\n", count_);
    for (int i = 0; i < count_; i++)
        printf("%c ", string2[i]);
    return 0;
}

Output:

The sentence contains 2 punct. character :
~ !

Program 2 :

C++

// C++ program to illustrate
// the iswpunct() function
#include <iostream>
using namespace std;

int main()
{
    int i = 0;
    int count_ = 0;

    // string declaration
    char string1[] = "@#$^gfg";
    char string2[count_];

    // iterate in the string
    while (string1[i]) {

        // check if the character is
        // punctuation mark or not
        if (iswpunct(string1[i])) {

            // store the punctuation characters
            string2[count_] = string1[i];
            count_++;
        }
        i++;
    }

    // prints the punctuation character
    cout <<"The sentence contains " << count_ << "punct. character :\n";
    for (int i = 0; i < count_; i++)
        cout <<" "<< string2[i];
    return 0;
}

// This code is contributed by shivanisinghss2110

C

// C++ program to illustrate
// the iswpunct() function
#include <bits/stdc++.h>
int main()
{
    int i = 0;
    int count_ = 0;

    // string declaration
    char string1[] = "@#$^gfg";
    char string2[count_];

    // iterate in the string
    while (string1[i]) {

        // check if the character is
        // punctuation mark or not
        if (iswpunct(string1[i])) {

            // store the punctuation characters
            string2[count_] = string1[i];
            count_++;
        }
        i++;
    }
    // prints the punctuation character
    printf("The sentence contains %d punct. character :\n", count_);
    for (int i = 0; i < count_; i++)
        printf("%c ", string2[i]);
    return 0;
}

Output:

The sentence contains 4 punct. character :
@ # $ ^