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ISRO2016-79

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5 votes
5 votes

Which one of the following is correct about the statements given below?

  1. All function calls are resolved at compile time in C lang
  2. All function calls are resolved at compile time in C++ lang
  1. Only II is correct
  2. Both I and II are correct
  3. Only I is correct
  4. Both I and II are incorrect
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2 Answers

Best answer
13 votes
13 votes

Consider here:

int (*p) ();
scanf("%d", &a);
if(a)
    p = fun1;
else
    p = fun2;
int b = (*p)();

This is an example of run time resolution of function calls in C. This is also applicable for C++ though it has other dynamic resolution via virtual functions. So, answer should be D. 

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5 votes
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(1) C supports only "Early Binding" in which all the functions related to their function calls are resolved at compile time.

(2)C++ Supports both "Early Binding" and "Late Binding".Late Binding is the process of resolving functions related to function calls during Run time.

In C++ virtual calling mechanisms are resolved at run-time.

Hence,Option(c)only 1 correct.

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