Discussion
What will be the output of the following C code?
#include <stdio.h>
#define san 557
main()
{
#ifndef san
printf("yes");
#endif
printf("no");
}
Answer: C
Correct answer: no
san is defined, so #ifndef san is false and the printf("yes") between it and #endif is deleted before compilation. Only the unconditional printf("no") remains, so the output is no.
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