Answer / harish

only #2 is d right answer......XOR yields...perfect answers.....

Answer / balasubramanian ganapthi

a=a+b-(a=b);

This is the example by using only one line to swap the two
variables without using the third variable.

Answer / ashesh anand

Thanks Guys....
#2 is absolutely right...

Answer / xeon

To note on the answer about Perl, it uses a third variable
and just doesn't tell you. The C++ equivalent is:

//Our data
class exampleclass {};
exampleclass classa, classb;
int inta, intb;
float floata, floatb;

//Our swap function
template<class T>
void swap(T *a, T *b) {
T temp = *a;
a = b;
*b = temp;
}

//Our use of the swap function
swap<classexample>(classa, classb);
swap<int>(inta, intb);
swap<float>(floata, floatb);

And also note, Perl is an interpreted (Script) language, so
though it is simple and robust, it is less efficient than a
language that is compiled.

Answer / dipak

#51 is perfect solution.

Answer / raja sekhar sharma

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

Answer / ankit goel

Sorry i dont know..??
only 1st ans is write......
so give me positive marking....
Thank You...

Answer / pallabi

if any one of the variables eithet A or B is negative or
else both r negatibe then how logic will vary in cobol?

Answer / indu b

a=10;
b=20;
a=a+b;
b=a-b;
a=a-b;
a=20,b=10;

Answer / sriram

Hey guys, what about swaping variables contains string
values? All of your solutions will suck... Try this and swap
any datatype without third variable... Happy Sensible Coding..

$v = 'sriram';
$u = 'lakshmi';

$v .= $u;
$u = substr($v,0,(strlen($v) - strlen($u)));
$v = substr($v,(strlen($v) - strlen($u)-1), strlen($v));

echo 'u = ' . $u .'<br>';
echo 'v = ' . $v;

writte a c-programm to display smill paces

2 Answers  

int aaa() {printf(“Hi”);} int bbb(){printf(“hello”);} iny ccc(){printf(“bye”);} main() { int ( * ptr[3]) (); ptr[0] = aaa; ptr[1] = bbb; ptr[2] =ccc; ptr[2](); }

1 Answers  

There is a lucky draw held every day. if there is a winning number eg 1876,then all possible numbers like 1867,1687,1768 etc are the numbers that match irrespective of the position of the digit. Thus all these numbers qualify fr the lucky draw prize Assume there is no zero digit in any numbers. write a program to show all the possible winning numbers if a "winning number"is passed as an arguments to the function.

1 Answers   Nagarro,

All the combinations of prime numbers whose sum gives 32

1 Answers   HHH,

Write out a function that prints out all the permutations of a string. For example, abc would give you abc, acb, bac, bca, cab, cba. You can assume that all the characters will be unique.

5 Answers   IITR, Microsoft, Nike,

main() { int i=5,j=10; i=i&=j&&10; printf("%d %d",i,j); }

1 Answers  

Code for 1>"ascii to string" 2>"string to ascii"

1 Answers   Aricent, Global Logic,

int main() { int x=10; printf("x=%d, count of earlier print=%d", x,printf("x=%d, y=%d",x,--x)); getch(); } ================================================== returns error>> ld returned 1 exit status =================================================== Does it have something to do with printf() inside another printf().

1 Answers  

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

1 Answers  

main() { unsigned int i=10; while(i-->=0) printf("%u ",i); }

2 Answers   HP,

main( ) { char *q; int j; for (j=0; j<3; j++) scanf(“%s” ,(q+j)); for (j=0; j<3; j++) printf(“%c” ,*(q+j)); for (j=0; j<3; j++) printf(“%s” ,(q+j)); }

1 Answers  

String reverse with time complexity of n/2 with out using temporary variable.

10 Answers   NetApp, Symantec,