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Input and output method

Input and output are essential concepts in programming languages. Input refers to the process of providing data to a program or function, while output refers to the process of displaying or returning data from a program or function.

Most programming languages provide built-in functions or methods for handling input and outpu. Here given code example.

/*
    C program for
    input and output method
*/
// Include header file
#include <stdio.h>

int main()
{
	// Declare variables
	int i;
	char c;
	float f;
	double d;
	long long int lli;
	long double ld;
	// scanf method are used to initialize value of 
	// custom input to its associate variable.
	// Here parameter one , indicates formation of input value 
	// and second is address of associate variable
	// Syntax
	// scanf ("format specifier of variables",address of variables)
	// Some Input example
	printf("Enter an integer : ");
	// %d for int
	scanf("%d", & i);
	printf("Enter an character : ");
	// %c for char
	scanf(" %c", & c);
	printf("Enter an float : ");
	// %f for float
	scanf("%f", & f);
	printf("Enter an double : ");
	// %lf for double
	scanf("%lf", & d);
	printf("Enter an long long int and an long double value : \n");
	// %lld long long int and %Lf for long double
	// Two input in single scanf
	scanf("%lld%Lf", & lli, & ld);
	// print method are used to display custom user message
	// And variables values.
	// Example show above input values
	printf("\n i : %d", i);
	printf("\n c : %c", c);
	printf("\n f : %f", f);
	printf("\n d : %lf", d);
	printf("\n lli : %lld", lli);
	printf("\n ld : %Lf", ld);
	return 0;
}

Output

Enter an integer : 12
Enter an character : A
Enter an float : 12.05
Enter an double : 1234553.44       
Enter an long long int and an long double value : 
1234567
987648238.3332

 i : 12
 c : A
 f : 12.050000
 d : 1234553.440000
 lli : 1234567
 ld : 987648238.333200
import java.util.Scanner;
/*
    Java program for
    input and output method
*/
public class InputOutput
{
	public static void main(String[] args)
	{
		// Create Scanner object
		Scanner enter = new Scanner(System.in);
		System.out.print("Enter an integer : ");
		// nextInt() for int
		int intValue = enter.nextInt();
		// Character Input
		System.out.print("Enter an character : ");
		// next().charAt(0) for character
		char charValue = enter.next().charAt(0);
		// Float Input
		System.out.print("Enter an float : ");
		// nextFloat() for float
		float floatValue = enter.nextFloat();
		// Double Input
		System.out.print("Enter an double : ");
		// nextDouble() for int
		double doubleValue = enter.nextDouble();
		// Boolean Input
		System.out.print("Enter an Boolean : ");
		// nextBoolean() for int
		boolean boolValue = enter.nextBoolean();
		// use to separate above inputs
		enter.nextLine();
		// String Input
		System.out.print("Enter String : ");
		// nextLine() for int
		String strValue = enter.nextLine();
		// Short Input
		System.out.print("Enter an short : ");
		// nextShort() for int
		short shortValue = enter.nextShort();
		// Other
		// nextByte() for Byte
		// Input method
		// print method
		System.out.print(" Input integer : " + intValue);
		// printf method
		System.out.printf("\n Input character : %c", charValue);
		// println method (include new line)
		System.out.println("\n Input float : " + floatValue);
		System.out.println(" Input Boolean : " + boolValue);
		System.out.print(" Input String : " + strValue);
		System.out.printf("\n Input Short : %d", shortValue);
	}
}

Output

Enter an integer : 45
Enter an character : J
Enter an float : 45.5
Enter an double : 32345345.4345
Enter an Boolean : true
Enter String : Java Code
Enter an short : 3 
 Input integer : 45
 Input character : J
 Input float : 45.5
 Input Boolean : true
 Input String : Java Code
 Input Short : 3
// Include header file
#include <iostream>
#include <string>
using namespace std;
/*
    C++ program for
    input and output method
*/

int main()
{
    int intValue ;
    char charValue ;
    float floatValue;
    double doubleValue;
    string strValue;

    cout << "Enter an integer : ";
    cin >> intValue;


    // Character Input
    cout << "Enter an character : ";
    cin >> charValue;

     // Float Input
    cout << "Enter an float : ";
    cin >> floatValue;

    // String inputs
    cout << "Enter  string : ";
    cin.ignore(); 
    getline(cin,strValue);
  
    // Accepting a double Input
    cout << "Enter an double : ";
    cin >> doubleValue;


    // Output
    cout << " Input integer : " << intValue <<endl;
    cout << " Input character : "<< charValue <<endl;
    cout << " Input doubleValue : "<< doubleValue <<endl;
    cout << " Input float : " << floatValue << endl;
    cout << " Input String : " << strValue << endl;

    return 0;
}

Output

Enter an integer : 32
Enter an character : P
Enter an float : 53.4
Enter  string : C++ Code
Enter an double : 345666.434
 Input integer : 32
 Input character : P
 Input doubleValue : 345666
 Input float : 53.4
 Input String : C++ Code

// Include namespace system
using System;
/*
    Csharp program for
    input and output method
*/
public class InputOutput
{
    public static void Main(String[] args)
    {   
        // Console.ReadLine() are use to input in runtime
        // Its returns an string value so we need to convert before its use  
        Console.Write("Enter an integer : ");
        // Integer inputs
        int intValue = Convert.ToInt32(Console.ReadLine());
        // Character Input
        Console.Write("Enter an character : ");
        // next().charAt(0) for character
        char charValue = Convert.ToChar(Console.ReadLine());
     
        // Double Input 
        Console.Write("Enter an double : ");
        double doubleValue = Convert.ToDouble(Console.ReadLine());

        // Boolean Input
        Console.Write("Enter an Boolean : ");
        Boolean boolValue = Convert.ToBoolean(Console.ReadLine());
    

        // String Input
        Console.Write("Enter String : ");
        String strValue = Console.ReadLine();

        // Display method
        Console.Write(" Input integer : " + intValue);
        Console.WriteLine("\n Input String : " + strValue);
        Console.WriteLine($" Input Double : {doubleValue} ");
        Console.WriteLine("Input Boolean {0} Input character {1}",boolValue,charValue);
    }
}

Output

Enter an integer : 56
Enter an character : S
Enter an double : 345.534
Enter an Boolean : true
Enter String : C# Code
 Input integer : 56
 Input String : C# Code
 Input Double : 345.534 
Input Boolean True Input character S

<?php
/*
    Php program for
    input and output method
*/


function main()
{
    // readline() and fscanf() input method
     // Int Input
    $intValue = (int) readline("Enter an integer : ");
    // Float Input
    $floatValue = (float) readline("Enter an float : ");

    echo("Enter an character : ");
    // Character Input
    fscanf(STDIN, "%c", $charValue);

    // String Input
    $strValue = readline("Enter String : ");
 

    echo("\n Input integer : ".$intValue);
    echo("\n Input character : ". $charValue);
    echo("\n Input float : ".$floatValue);
    echo("\n Input String : ".$strValue);

}
main();

Output

Enter an integer : 123
Enter an float : 44.55
Enter an character : P
Enter String : Php code example

 Input integer : 123
 Input character : P
 Input float : 44.55
 Input String : Php code example
Last updated on by Kalkicode




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