can u write a program in C, which does not use = (eqaul)or
any arithmatic assignment(like -=,+=,*= etc) operator to
swap to number?
- 2 Answers
- 3890 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / musa
swapping x and y using z as intermediary
memcpy(&z, &x, sizeof(x));
memcpy(&x, &y, sizeof(x));
memcpy(&y, &z, sizeof(x));
| Is This Answer Correct ? | 2 Yes | 1 No |
Simple... use XOR (^) operator...
example suppose,
x=101 (binary)
y=010 (binary)
now,
Execute : x=x^y; -->> from LSB 1^0=1 0^1=1 1^0=1
now x=111
Execute : y=x^y; -->> from LSB 1^0=1 1^1=0 1^0=1
now y=101 (101 used to be the value of x)
Execute : x=x^y; -->> from LSB 1^1=0 1^0=1 1^1=0
now x=010 (010 used to be the values of y)
code snippet
{
x=10;
y=30;
//swap x and y
x=x^y;
y=x^y;
x=x^y;
}
now x=30 and y=10
any doubts please ask me....
| Is This Answer Correct ? | 3 Yes | 8 No |
What is the benefit of using const for declaring constants?
What are examples of structures?
What is sorting in c plus plus?
write a program to insert an element at the specified position in the given array in c language
write a program to find the sum of the array elements in c language?
24 Answers ICT, Infosys, Wipro,
We can draw a box in cprogram by using only one printf();& without using graphic.h header file?
What is selection sort in c?
a memory of 20 bytes is allocated to a string declared as char *s then the following two statements are executed: s="Etrance" l=strlen(s); what is the value of l ? a.20 b.8 c.9 d.21
What is meant by high-order and low-order bytes?
What is a rvalue?
How do I determine whether a character is numeric, alphabetic, and so on?
Which one would you prefer - a macro or a function?
C 
