How to swap two variables, without using third variable ?

Answer Posted / ruchi

let the two numbers are a & b

a=a+b
b=a-b
a=a-b

let a=5 & b=10
a=a+b=15
b=a-b=15-10=5
b=5

a=a-b=15-5=10
hence a & b become 10 & 5

Is This Answer Correct ?    0 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

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

2829


write a function to give demostrate the functionality of 3d in 1d. function prototye: change(int value,int indexX,int indexY,int indexZ, int [] 1dArray); value=what is the date; indexX=x-asix indexY=y-axis indexZ=z-axis and 1dArray=in which and where the value is stored??

4153


Write a program to model an exploding firecracker in the xy plane using a particle system

3697


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

1805


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

1080






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

2417


how to test pierrot divisor

2264


how to create a 3x3 two dimensional array that will give you the sums on the left and bottom columns

3131


Design an implement of the inputs functions for event mode

2970


Set up procedure for generating a wire frame display of a polyhedron with the hidden edges of the object drawn with dashed lines

3036


To Write a C program to remove the repeated characters in the entered expression or in entered characters(i.e) removing duplicates. String contains only lowercase characters ['a'-'z']

508


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

3118


Write a routine to implement the polymarker function

4389


How can you relate the function with the structure? Explain with an appropriate example.

2925


I need your help, i need a Turbo C code for this problem.. hope u'll help me guys.? Your program will have a 3x3 array. The user will input the sum of each row and each column. Then the user will input 3 values and store them anywhere, or any location or index, temporarily in the array. Your program will supply the remaining six (6) values and determine the exact location of each value in the array. Example: Input: Sum of row 1: 6 Sum of row 2: 15 Sum of row 3: 24 Sum of column 1: 12 Sum of column 2: 15 Sum of column 3: 18 Value 1: 3 Value 2: 5 Value 3: 6 Output: Sum of Row 1 2 3 6 4 5 6 15 7 8 9 24 Sum of Column 12 15 18 Note: Your program will not necessary sort the walues in the array Thanks..

2813