función iswpunct() en C/C++

iswpunct () es una función en C/C++ que comprueba si el código de caracteres anchos representa un carácter de clase punct en la configuración regional actual del programa. Devuelve un valor distinto de cero si Wide-Character es un código de puntuación de caracteres anchos; de lo contrario, devolverá 0. Esta función se define en el archivo de encabezado cwctype . La función comprueba si ch es un carácter de puntuación o no. Los caracteres de puntuación son como sigue 

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

Sintaxis: 

int iswpunct(ch)

Parámetros: la función acepta un único parámetro obligatorio ch que especifica el carácter que se va a comprobar.

 Valor devuelto: la función devuelve un valor distinto de cero si el carácter ch es un carácter de puntuación; de lo contrario, devuelve cero. 

El siguiente programa ilustra la función anterior:  

// 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++ 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;
}

The sentence contains 2 punct. character :
~ !

Programa 2: 

// 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++ 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;
}

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