Untitled

import java.util.Scanner;
public class Operations
{
public static void main(String[] args)
{
Scanner input=new Scanner(System.in);
System.out.println("Enter first integer between 0 to 50 inclusively");
int n1=input.nextInt();
while(true)
{
if(n1>=0 && n1<=50)
break;
System.out.println("Error: the entered number is out of range");
System.out.println("Enter first integer between 0 to 50 inclusively");
n1=input.nextInt();
}
System.out.println("Enter second integer between -5 to 20 inclusively");
int n2=input.nextInt();
while(true)
{
if(n2>=-5 && n2<=20)
break;
System.out.println("Error: the entered number is out of range");
System.out.println("Enter second integer between -5 to 20 inclusively");
n2=input.nextInt();
}
System.out.println("Enter operation you want to perform: addition (+), subtraction (-), multiplication (*), division (/), or modulus (%)");
char op=input.next().charAt(0);
int result=0;
if(op=='+')
{
result=n1+n2;
System.out.printf(String.format("Addition: %d %c %d = %d\n",n1,op,n2,result));
}
else if(op=='-')
{
result=n1-n2;
System.out.printf(String.format("Subtraction: %d %c %d = %d\n",n1,op,n2,result));
}
else if(op=='*')
{
result=n1*n2;
System.out.printf(String.format("Multiplication: %d %c %d = %d\n",n1,op,n2,result));
}
else if(op=='/')
{
if(n2==0)
{
System.out.println("Error: Division by zero");
System.exit(0);
}
result=n1/n2;
System.out.printf(String.format("Division: %d %c %d = %d\n",n1,op,n2,result));
}
else if(op=='%')
{
result=n1%n2;
System.out.println("Modulus: "+n1+" "+op+" "+n2+"= "+result);
}
else
{
System.out.println("Error: Invalid operation");
System.exit(0);
}
if(result==0)
System.out.print("The result is zero");
else if(result>0)
System.out.print("The result is positive");
else
System.out.println("The result is negative");
}
}