can u write a program in C, which does not use = (eqaul)or
any arithmatic assignment(like -=,+=,*= etc) operator to
swap to number?
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 |
FORMATTED INPUT/OUTPUT functions are a) scanf() and printf() b) gets() and puts() c) getchar() and putchar() d) all the above
Wt are the Buses in C Language
How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
what is the stackpointer
Write a program to show the workingof auto variable.
What are header files and what are its uses in C programming?
What does it mean when the linker says that _end is undefined?
Can we access array using pointer in c language?
How to set a variable in the environment list?
c program to input values in a table(using 2D array) and print odd numbers from them
What is 1f in c?
Write a C/C++ program to add a user to MySQL. The user should be permitted to only "INSERT" into the given database
2 Answers TCS, Unisys, Webyog,