How to swap two variables, without using third variable ?

Answers were Sorted based on User's Feedback



How to swap two variables, without using third variable ?..

Answer / er

Only #2 will work. The others may over/under flow.

Is This Answer Correct ?    83 Yes 129 No

How to swap two variables, without using third variable ?..

Answer / krishna

a=(a>b?a:b)

Is This Answer Correct ?    9 Yes 64 No

How to swap two variables, without using third variable ?..

Answer / ankush

using ref keyword we can swap 2 number's

emaple
class swap
{
public void add(ref int a,ref int b)
{
int z;
z=a;
a=b;
b=z;
}
}
class swapdemo
{
static void main()
{
int x=10,y=5;
ankush obj=new ankush();
Console.writeline{"befor value's"+a+","+b};
obj.swap(ref x, ref y);
Console.writeline("after values"+a+","+b);
}
}

Is This Answer Correct ?    13 Yes 72 No

How to swap two variables, without using third variable ?..

Answer / vinay_csjm

a=5,b=10
a=a-b;
b=a+b;
a=a+b;

Is This Answer Correct ?    184 Yes 390 No

Post New Answer

More C Code Interview Questions

main() { if ((1||0) && (0||1)) { printf("OK I am done."); } else { printf("OK I am gone."); } } a. OK I am done b. OK I am gone c. compile error d. none of the above

5 Answers   HCL,


void pascal f(int i,int j,int k) { printf(“%d %d %d”,i, j, k); } void cdecl f(int i,int j,int k) { printf(“%d %d %d”,i, j, k); } main() { int i=10; f(i++,i++,i++); printf(" %d\n",i); i=10; f(i++,i++,i++); printf(" %d",i); }

1 Answers  


respected sir, i did my MCA in 2013 when i am going to attend to an interview i was asked about my project how will i explain my project could please help me in this and my project title is "Social Networking Site For Social Responsibility"

1 Answers   Genpact, Ozdocs,


How do you sort a Linked List (singly connected) in O(n) please mail to pawan.10k@gmail.com if u can find an anser...i m desperate to knw...

6 Answers   Microsoft, MSD, Oracle,


source code for delete data in array for c

1 Answers   TCS,


write a c program to Create a registration form application by taking the details like username, address, phone number, email along with password and confirm password (should be same as password).Ensure that the password is of 8 characters with only numbers and alphabets. Take such details for 5 users and display the details. In place of password display “****”. (Use Structures).

0 Answers   CDAC, College School Exams Tests,


#define int char main() { int i=65; printf("sizeof(i)=%d",sizeof(i)); }

1 Answers  


why java is platform independent?

13 Answers   Wipro,


#include<conio.h> main() { int x,y=2,z,a; if(x=y%2) z=2; a=2; printf("%d %d ",z,x); }

1 Answers  


how to programme using switch statements and fuctions, a programme that will output two even numbers, two odd numbers and two prime numbers of the users chioce.

0 Answers   Mbarara University of Science and Technology,


Print an integer using only putchar. Try doing it without using extra storage.

2 Answers  


Is the following code legal? typedef struct a aType; struct a { int x; aType *b; };

1 Answers  


Categories