Question 4: Which of the following statements correctly describe the code below in C++?
2010-11-30 10:24
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#define language 437 //Line 1
#if language < 400
#undef language //Line 2
#else //Line 3
#define language 850 //Line 4
#ifdef language //Line 5
printf("%d", language); //Line 6
#endif
#endif
A. An error or warning will occur on Line 6 because a macro cannot be used as
part of a preprocessor directive.
B. An error or warning will occur on Line 2 because #undef is not a valid preprocessor directive.
C. An error or warning will occur on Line 4 because language has already been defined.
D. If Line 1 is changed to #define language 300, Line 6 will print "850".
E. An error or warning will occur on Line 3 because #else can only be used as the last conditional in the chain.
A C
#if language < 400
#undef language //Line 2
#else //Line 3
#define language 850 //Line 4
#ifdef language //Line 5
printf("%d", language); //Line 6
#endif
#endif
A. An error or warning will occur on Line 6 because a macro cannot be used as
part of a preprocessor directive.
B. An error or warning will occur on Line 2 because #undef is not a valid preprocessor directive.
C. An error or warning will occur on Line 4 because language has already been defined.
D. If Line 1 is changed to #define language 300, Line 6 will print "850".
E. An error or warning will occur on Line 3 because #else can only be used as the last conditional in the chain.
A C
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