(Find the Error) Determine whether the following program segments contain errors. For each error, explain how it can be corrected. [Note: For a particular program segment, it’s possible that no errors are present in the segment.]

a) ```
template < class A >
int sum( int num1, int num2, int num3 )
{
return num1 + num2 + num3;
}
```
b) ```
void printResults( int x, int y )
{
cout << "The sum is " << x + y << '\n';
return x + y;
}
```
c) ```
template < A >
A product( A num1, A num2, A num3 )
{
return num1 * num2 * num3;
}
```
d) ```
double cube( int );
int cube( int );
```

a) Error: The function return type and parameter types are int.
Correction: The function return type and parameter types should be A or the function should not be a template.
b) Error: The function specifies a void return type and attempts to return a value.
Two possible solutions: (1) change void to int, or (2) remove the line return x + y;.
c) Error: Keyword class is missing in the template declaration.
Correction: Insert keyword class (or keyword typename), as in template .
d) Error: The signatures are not different. Overloaded functions must have different signatures—the name and/or parameter list must be different. If only the returns types differ, the compiler generates an error message.
Correction: Change either the name or parameter list of one of the functions.