Conditional

Q1 - Write a program which takes the values of length and breadth from user and check if it is a square or
not.
Enter length:
5
Enter breadth:
4

It is a rectangle
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int length;
System.out.print("Enter the length : ");
length=sc.nextInt();
int breadth;
System.out.print("Enter the breadth : ");
breadth=sc.nextInt();
if(length==breadth)
{
System.out.print("It is a square");
}else{
System.out.print("It is not a square");
}
}
}
Sample Input :

Sample Output :
Assignment Solutions

Cracking the Coding Interview in JAVA - Foundation
Q2 - Write a program to print absolute value of a number entered by the user.

-1
1
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int num;
System.out.print("Enter the number : ");
num=sc.nextInt();
if(num<0)
{
num=num*-1;
}
System.out.print("The absolute value is : " + num);
}
}
Sample Input :
Sample Output :
Assignment Solutions

Cracking the Coding Interview in JAVA - Foundation

Q3 - Write a program to take input from user for Cost Price (C.P.) and Selling Price(S.P.) and calculate Profit
or Loss.
Explanation : Formula for profit and loss
Profit = S.P - C.P
Loss = C.P - S.P
(S.P is Selling Price and C.P is Cost Price)
Enter cost price: 4000
Enter selling price: 9560
Profit = 5560
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int cp;
int sp;
System.out.print("Enter the Cost Price : ");
cp=sc.nextInt();
System.out.print("Enter the Selling Price : ");
sp=sc.nextInt();
int amt;
if(cp>sp)
{
amt=cp-sp;
System.out.print("The loss is : "+amt);
}else if(cp<sp)
{
amt=sp-cp;
System.out.print("The profit is : "+amt);
}else{
System.out.print("No Profit No Loss");
}
}
}
Sample Input :

Sample Output :
Assignment Solutions

Cracking the Coding Interview in JAVA - Foundation

Assignment Solutions

Cracking the Coding Interview in JAVA - Foundation

Q4 - Write a program to print positive number entered by the user, if user enters a negative number, it is
skipped.

Enter an integer: -6
The number is negative and skipped

import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int x;
System.out.print("Enter the Number : ");
x=sc.nextInt();
if(x>=0)
{
System.out.print("You entered a positive number");
}else{
System.out.print("You number is negative and is skipped");
}
}
}
Sample Input :
Sample Output :
Assignment Solutions

Cracking the Coding Interview in JAVA - Foundation

Q5 - Create a calculator using switch statement to perform addition, subtraction, multiplication and division.
Enter an operator (+, -, *, /): -
Enter two numbers:
6
8

6 - 8 = -2
import java.util.*;
class Main {
public static void main(String[] args) {
char op;
Double num1;
Double num2;
Double ans;
Scanner sc = new Scanner(System.in);
System.out.print("Enter an operator: (+, -, *, or /)");
op = sc.next().charAt(0);
System.out.print("Enter first number : ");
num1 = sc.nextDouble();
System.out.print("Enter second number : ");
num2 = sc.nextDouble();
switch (op) {
case '+':
ans = num1 + num2;
System.out.println(num1 + " + " + num2 + " = " + ans);
break;
case '-':
ans = num1 - num2;
System.out.println(num1 + " - " + num2 + " = " + ans);
break;
case '*':
ans = num1 * num2;
System.out.println(num1 + " * " + num2 + " = " + ans);
break;
case '/':
ans = num1 / num2;
System.out.println(num1 + " / " + num2 + " = " + ans);
break;
default:
System.out.println("Error! The operator is not correct");
break;
}
}
}
Sample Input :

Sample Output :
Assignment Solutions

Cracking the Coding Interview in JAVA - Foundation
Q6 - Write a program to calculate marks to grades . Follow the conversion rule as given below :

Enter Your Marks: 98

Sample Output :
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int marks;
System.out.print("Enter the marks : ");
marks=sc.nextInt();
if(marks>=90)
{
System.out.print("Your Grade is A+");
}else if(marks>=80)
{
System.out.print("Your Grade is A");
}else if(marks>=70)
{
System.out.print("Your Grade is B+");
}else if(marks>=60)
{
System.out.print("Your Grade is B");
}else if(marks>=50)
{
System.out.print("Your Grade is C");
}else if(marks>=40)
{
System.out.print("Your Grade is D");
}else if(marks>=30)
{
System.out.print("Your Grade is E");
}else if(marks<30){
System.out.print("Your Grade is f");
}else{
System.out.print("Enter valid marks");
}
}
}