Monday 21 May 2012

• Home
• Answers
• About
• Contact

From w3schools.in

Program:

#include <stdio.h>
int main() {
int i = 65;
int k = 120;
printf("\n value of i=%d k=%d before swapping", i, k);
i = i ^ k;
k = i ^ k;
i = i ^ k;
printf("\n value of i=%d k=%d after swapping", i, k);
return 0;
}

Explanation:

i = 65; binary equivalent of 65 is 0100 0001
k = 120; binary equivalent of 120 is 0111 1000
i = i^k;
i...0100 0001
k...0111 1000
---------
val of i = 0011 1001
---------
k = i^k
i...0011 1001
k...0111 1000
---------
val of k = 0100 0001 binary equivalent of this is 65
---------(that is the initial value of i)
i = i^k
i...0011 1001
k...0100 0001
---------
val of i = 0111 1000 binary equivalent of this is 120
--------- (that is the initial value of k)
 

» C program to display the multiplication table of a given num
» C program to generate the Fibonacci series
» C program to print a semicolon without using a semicolon
» C program to compare two strings without using strcmp
» C program to concatenate two strings without using strcat
» C program to delete a specified line from a text file
» C program to replace a specified line in a text file
» C program to find the number of lines in a text file
» C program which asks the user for a number between 1 to 9
» C program to check whether the given string is a palindrome
» C program to check whether the given number is a palindromic
» C program to find factorial of the given number
» C program to check whether the given number is even or odd
» C program to swap two numbers using a temporary variable
» C program to swap two numbers using bitwise operators
» C program to find the greatest of three numbers
» C program to find the greatest among ten numbers
» C program to check whether the given number is a prime
» How to create pyramid in c
» Fun with C language.