What is the answer?

sachingoyal

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What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?

#include<stdio.h>
#define SWAP(a, b, c)(c t; t=a, a=b, b=t)
int main()
{
int x=10, y=20;
SWAP(x, y, int);
printf("%d %d\n", x, y);
return 0;
}

A. It compiles
B. Compiles with an warning
C. Not compile
D. Compiles and print nothing

:thankyou::thankyou::thankyou:
 

Bulan

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The answer is C:
Because, the code won't compile since statement of t can't occur within parenthesis.
 
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