Need help with these study question 1. Here is the prototype for a function name

Question

Need help with these study question

1. Here is the prototype for a function named computeValue:

void computeValue(int);

Which of the following is a correct call (invoke) to this function?

void computeValue(int x);

2.

What is the output from the following piece of code?

#include <iostream>
using namespace std;
void copy (int& a, int& b, int& c);

int main ()
{
int x = 5, y = 3, z = 7;
copy (x, y, z);
cout << x << " & " << y << " & " << z;
return 0;
}
void copy (int& a, int& b, int& c)
{
a *= 2;
b *= 2;
c *= 2;
}

3.

What is the output from the following piece of code?

#include <iostream>
using namespace std;
void copy (int& a, int b, int& c);

int main ()
{
int x = 5, y = 3, z = 7;
copy (x, y, z);
cout << x << " & " << y << " & " << z;
return 0;
}
void copy (int& a, int b, int& c)
{
a *= 2;
b *= 2;
c *= 2;
}

4.A function can have zero to many parameters, and it can return this many values:

Explanation / Answer

Question 1:

Answer is: computeValue(10);

here computeValue() is call with a parameter of integer value and end with ';' semicolumn

Question 2:

Answer is: 10 & 6 & 14

all the values are doubled because a,b,c are passed by reference so any changes done to a,b,c will refect to original values in main()

Question 3:

Answer is: 10 & 3 & 14

all the values are doubled except b because b are not passed by reference so any changes done to a,c will refect to original values in main() but not b

Question 4:

Answer is: no more than one

int function1(int n1,int n2,int n3 ..... int nn)

here the function can return only single value at the end.

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