How to swap two variables, without using third variable ?

Answer Posted / rehan

#include<stdio.h>
main()
{
int a,b;
printf("Enter any two numbers\n");
scanf("%d%d",&a,&b);
printf("The values before swapping are\n%d %d\n",a,b);
swap(&a,&b);
printf("The values after swapping are\n%d %d\n",a,b);
getch();
}

swap(*x,*y)
{
int t;
t=*x;
*x=*y;
*y=t;
}

Is This Answer Correct ?    5 Yes 24 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

A program that will create a movie seat reservation. The program will display the summary seats and its status. The user will be ask what seat no. to be reserved, then it will go back again to the summary to display the updated seat status. If the seat no. is already reserved then it will prompt an error message. And also if the input seat no is out of range then it will also prompt an error message. The program is continuously running. Termination of the program will depends on how the programmer will apply. Sample output: Movie Seats Reservation Summary of Seats: Seat 1: Available Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 1 Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 6 The Seat no. is out of range! Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 1 The Seat no. is already reserved! Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 0 GoodBye... Thank You!!!

2121


Cluster head selection in Wireless Sensor Network using C programming language.

3456


Sir... please give some important coding questions asked by product companies..

2065


how to test pierrot divisor

2513


why nlogn is the lower limit of any sort algorithm?

2581


why do you use macros? Explain a situation where you had to incorporate macros in your proc report? use a simple instream data example with code ?

2569


What is the match merge ? compare data step match merge with proc sql merge - how many types are there ? data step vs proc sql

2679


write a simple calculator c program to perform addition, subtraction, mul and div.

3447


Develop a routine to reflect an object about an arbitrarily selected plane

3343


3) Int Matrix of certain size was given, We had few valu= es in it like this. =97=97=97=97=97=97=97=97=97=97=97 1 = | 4 | | 5 | &= nbsp; | 45 =97=97=97=97=97=97=97=97=97=97=97 &n= bsp; | 3 | 3 | 5 | = | 4 =97=97=97=97=97=97=97=97=97=97=97 34 |&nbs= p; 3 | 3 | | 12 | &= nbsp; =97=97=97=97=97=97=97=97=97=97=97 3 | &nbs= p; | 3 | 4 | = | 3 =97=97=97=97=97=97=97=97=97=97=97 3 | = ; | | | = ; 3 | =97=97=97=97=97=97=97=97=97=97=97 &= nbsp; | | 4 | = ; | 4 | 3 We w= ere supposed to move back all the spaces in it at the end. Note: = If implemented this prog using recursion, would get higher preference.

3555


What is data _null_? ,Explain with code when u need to use it in data step programming ?

3075


could you please send the program code for multiplying sparse matrix in c????

3342


What is full form of PEPSI

2172


#include int main(void) { int a=4, b=2; a=b<>2 ; printf("%d",a); return 0; }

1351


write a program for area of circumference of shapes

2293