Definition type

[Jackson Marie]

In short, I have no idea...
Which way is faster?

Func(char *str, double d, int len, bool bExtra)
Func(char str[],double d, short len, bool bExtra)
Func(char str[], double *d, short len, bool bExtra);

[vlad from moscow]

There is no difference between the parameter declarations

char *str and char str[] because an array declared as passed by value implicitly is converted to a pointer to its first element. So these two declarations are equivalent.

As for double and double * then double * adds additional indirect access that requires more mashine commands. As for int and short then short usually is promoted to int. So it is better to use int.