Answer:
A. C to clear any previous calculations.
hope it helps...
Numeric data because it consist of numbers
Incorrect data can lead to unexpected program execution results. Data entry errors can be reduced by only accepting valid input, e.g., if a number must be entered, alphabetic characters are ignored. After data validation, error messages can be prompted to the user, requiring him to enter the data again.
The answer would be d they are both rare and valuable minerals
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 .