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C program to print all printable characters using the isprint() function

Here, we are going to learn how to print all printable characters using the isprint() function in C language?
Submitted by Nidhi, on August 25, 2021

Problem Solution:

Here, we will print all printable characters available in C using the isprint() library function.

The isprint() function checks whether a character is a printable character or not. This function is defined in ctype.h header file.

Syntax:

int isprint( int ch);

The function accepts a parameter and returns non-zero integer, if not it returns 0.

Program:

The source code to print all printable characters using the isprint() function is given below. The given program is compiled and executed using GCC compile on UBUNTU 18.04 OS successfully.

// C program to print all printable characters
// using isprint() function

#include <stdio.h>
#include <ctype.h>

int main()
{
    int cnt;
    printf("Printable characters are: \n");

    for (cnt = 0; cnt <= 127; cnt++)
        if (isprint(cnt) != 0)
            printf("%c ", cnt);

    printf("\n");

    return 0;
}

Output:

Printable characters are: 
  ! " # $ % & ' ( ) * + , - . / 
0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 
[ \ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t 
u v w x y z { | } ~ 

Explanation:

Here, we printed all printable characters available in C language using the isprint() library function on the console screen.

C Basic Programs »


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