Discussion
What is the output of this program?
#include <stdio.h>
#define CONDITION(x)
printf("letsfindcourse");
int main()
{
CONDITION(0);
return 0;
}
Answer: B
Correct answer: Compilation error
The macro CONDITION(x) has an empty body, since a #define ends at the end of its line. The printf below it is therefore an ordinary statement at file scope, where only declarations may appear, and the compiler rejects it. To make it part of the macro the first line would have to end in a backslash.
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