To determine the output of the given code, let's analyze the code step by step:
- The function
int v() is defined, which returns an integer value.
- Inside the function
v(), a variable m is declared and initialized to 0.
- The statement
return m++; is used to return the value of m and then increment it by 1. However, the postfix increment operator (++) returns the original value of m before incrementing it.
- The
main() function is defined.
- The output statement
cout << v(); is used to call the v() function and print its return value.
Now, let's go through each option to determine the correct output:
Option A) 1 - This option is incorrect because the postfix increment operator (m++) returns the original value of m before incrementing it. Therefore, the value returned by v() will be 0.
Option B) 0 - This option is correct because the return statement return m++; returns the initial value of m, which is 0.
Option C) Code cannot compile - This option is incorrect because the code provided is syntactically correct and will compile without any errors.
Option D) None of the Above - This option is incorrect because the correct answer is Option B) 0.
Therefore, the correct answer is Option B) 0.