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Ullman (Compiler Design) Edition 2 Exercise 1.6 Question 4 (Page No. 36)

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 What is printed by the following C code?

#define a (x+1)
int x = 2;
void b() {x = a; printf("%d\n",x);}
void c() {int x = 1; printf("%d\n"),a;}
void main() {b(); c();}
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1 Answer

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It will simply print 3 and 0.

3 is printed by the function b

 

0 is printed by the function c

Actually function c should not print anything but the printing of 0 indicates that the execution is successful.

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