main Function in C

ispunct() function in C

Last Updated : 16 Dec, 2021

The ispunct() function checks whether a character is a punctuation character or not.
The term “punctuation” as defined by this function includes all printable characters that are neither alphanumeric nor a space. For example ‘@’, ‘$’, etc.
This function is defined in ctype.h header file.

syntax:

int ispunct(int ch);
ch: character to be checked.
Return Value  : function return nonzero
 if character is a punctuation character;
 otherwise zero is returned.

CPP

// Program to check punctuation 
#include <stdio.h> 
#include <ctype.h> 
int main() 
{ 
    // The punctuations in str are '!' and ',' 
    char str[] = "welcome! to GeeksForGeeks, "; 
  
    int i = 0, count = 0; 
    while (str[i]) { 
        if (ispunct(str[i])) 
            count++; 
        i++; 
    } 
    printf("Sentence contains %d punctuation"
           " characters.\n", count); 
    return 0; 
} 

Output:


Sentence contains 2 punctuation characters.

CPP

// C program to print all Punctuations 
#include <stdio.h> 
#include <ctype.h> 
int main() 
{ 
    int i; 
    printf("All punctuation characters in C"
            " programming are: \n"); 
    for (i = 0; i <= 255; ++i) 
        if (ispunct(i) != 0) 
            printf("%c ", i); 
    return 0; 
} 

Output:

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

main Function in C

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