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3.1 Write a program to read input two integers x,y from the user and swap the numbers without using a third variable.

3.1 Write a program to read input two integers x,y from the user and swap the numbers without using a third variable.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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**Title: Program to Swap Two Integers Without Using a Third Variable** **Description:** In this exercise, you will learn how to write a program that takes two integers as input. The goal is to swap these numbers without employing a third variable. This is a common problem that helps in understanding variable manipulation and arithmetic operations. **Instructions:** 3.1 Write a program to read input two integers x, y from the user and swap the numbers without using a third variable. **Hints:** To swap the numbers without a third variable, you can use arithmetic operations or bitwise XOR operations: 1. **Using Addition and Subtraction:** - Add both numbers and store the result in one of the variables. - Subtract the second number from the result to get the first number. - Subtract the first number from the result to get the second number. 2. **Using XOR (^) Operator:** - Apply XOR on both numbers and store the result in one of the variables. - Apply XOR between the resultant and the second number. - Apply XOR between the resultant and the first number. Explore both methods to understand how each one works and why they are effective in swapping variables without needing a temporary variable.
Transcribed Image Text:**Title: Program to Swap Two Integers Without Using a Third Variable** **Description:** In this exercise, you will learn how to write a program that takes two integers as input. The goal is to swap these numbers without employing a third variable. This is a common problem that helps in understanding variable manipulation and arithmetic operations. **Instructions:** 3.1 Write a program to read input two integers x, y from the user and swap the numbers without using a third variable. **Hints:** To swap the numbers without a third variable, you can use arithmetic operations or bitwise XOR operations: 1. **Using Addition and Subtraction:** - Add both numbers and store the result in one of the variables. - Subtract the second number from the result to get the first number. - Subtract the first number from the result to get the second number. 2. **Using XOR (^) Operator:** - Apply XOR on both numbers and store the result in one of the variables. - Apply XOR between the resultant and the second number. - Apply XOR between the resultant and the first number. Explore both methods to understand how each one works and why they are effective in swapping variables without needing a temporary variable.
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