Question
What is the output of this C code?
int main()
{
void foo();
void f()
{
foo();
}
f();
}
void foo()
{
printf("2 ");
}
int main()
{
void foo();
void f()
{
foo();
}
f();
}
void foo()
{
printf("2 ");
}
Answer: Option D
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Even though the answer is 2, this code will compile fine only with gcc. GNU C supports nesting of functions in C as a language extension where as standard C compiler doesn't.
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