Given the function declaration (prototype), does the compiler complain or compile if you call this using the following line? If the compiler complains, what is the complaint?

Question

```
//if score >= min_to_pass, returns 'P' for passing,
//else returns 'F' for failing.
char grade (int score, int min_to_pass);
int main()
{
double fscore;
char fgrade;
int need_to_pass;

//omitted code to get values for variables
//fscore and need
fgrade = grade(fscore, need);
return 0;
}
```

Answer 1

The compiler complains about using a double for a parameter for a function calling for an int parameter. The reason is the C++ strong type checking. There is a possible loss of information when a double is sent to any kind of integer (char, int, long) parameter, or assigned to an integer. Warning messages from the Gnu g++ compiler are:
Line 14: warning: float or double used for argument 1
double grade(int, int);