What is the output of this program? void wth(int i, int &k) { i = 1;...
What is the output of this program?
void wth(int i, int &k) {
i = 1;
k = 2;
}
int main (){
int x = 0;
wth(x, x);
cout << x << endl;
return 0;
}
(a) 2
(b) wth
(c) 1
(d) Run-time error
(e) 0
(f) Compile-time error
(g) None of the above
Homework Answers
Answer : 2 (option a)
Code:
Output:
Hint: If a variable is accepted by a function (wth) as reference (&k) then the changes done in that function to that variable will be reflected in the caller function (main) too. That is what happened with the variable x in the main function.
&k in the function wth accepts the address of the variable sent (not the value of it i.e., 0) so the value assigned to that address in wth will affect to the value in the caller function too. So, x = 2.
Please comment if any clarification needed. Thank you.
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What is the output of this program?
void wth(int i, int &k) {
i = 1;...
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