Answer the following statements true (T) or false (F)

1. Functions can be called several times from different points in a program because for each call the program keeps track of the statement to which control returns after the call finishes its last step.
2. If f1 and f2 are the names of functions defined in a C program, then the statement sequence
f1;
f2;
f1;
is legal in function main.
3. The preprocessor directive
#include
should be present in a program that calls the fabs library function.
4. A function that takes no arguments is more versatile than a function that requires arguments.
5. A function must be defined before it can be referenced.

1. True
2. False
3. True
4. False
5. True