Question: Where is the error of the following program: #include using namespace std; int main() { cout <

Where is the error of the following program:

#include using namespace std;

int main() { cout<

-the function foo needs a prototype.

-foo function can not take literal integer. It has to take int variable.

-The function foo has to be inside main function

-The header of foo should be:

int foo(int &x)

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