Question

Write a single Java if-else statement that outputs the value of a char variable GRADE if GRADE is equal to 'A' or 'B' or 'C' or 'D' or 'F'; otherwise, output the message "Input Error".

Answer 1

Answer:

Following are the program in java is given below

import java.util.*; // import package

public class Main // main class

{

public static void main(String[] args) // MAIN FUNCTION

{

Scanner scan2 = new Scanner(System.in);// scanner CLASS

System.out.println("Enter the Grade ");

char GRADE = scan2.next().charAt(0);//Read input by user

if(GRADE=='A' || GRADE=='B' || GRADE=='C' || GRADE=='D' || GRADE=='F' ) // //CHECK CONDITION

{    

System.out.println("The GRADE is :" +GRADE); // display grade  

}

else // Else block

{

System.out.println(" Input Error"); // display message

}

}

}

Output:

Enter the Grade

D

The GRADE is :D

Explanation:

Following are the description of program

• Create the object of scanner class for read the value of grade by the user .
• Read the value of "GRADE" variable by using the scanner class object  scan 2
• Now check the condition in if block if the "GRADE" is  'A' or 'B' or 'C' or 'D' or 'F' then display the value of the GRADE variable otherwise else block is executed and input error message is displayed .