Question
#define BIRD 5
int main()
{
#ifdef BIRD
printf("BIRD=5.");
#else
printf("UNKNOWN.");
#endif
#undef BIRD
#define BIRD 10
printf("BIRD=%d",BIRD);
return 0;
}a.
BIRD=5.BIRD=5
b.
BIRD=10.BIRD=10
c.
BIRD=5.BIRD=10
d.
Compiler error
Posted under Macro and Preprocessor C Programming
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Q. What is the output of C program with #undef?
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