C Functions

Choose correct statement about Functions in C Language.

• A Function is a group of c statements which can be reused any number of times

• Every Function has a return type

• Every Function may not return a value

• All the above

In function declaration, which parts are needed?

• Function's name

• Return type

• Parameters (if any)

• Call a function

Answer explanation

A function declaration must include the function's name, a return type, and parameters (if any).

Calling a function is a statement, not a part of function declaration.

Where do we put the function declaration?

• Behind main()

• Above #include<stdio.h>

• Above main()

• Inside main()

Answer explanation

The function declaration must be put above main(). Otherwise, the compiler returns errors.

The default return type of a function is....

• float

• double

• int

• char

Choose a correct statement about C Function?

• A function always returns a value

• A function can return one or more values. For example: return 0, 1, 2;

• void is the default return type

• void means "no return values"

Answer explanation

A function may not return any value. In this case, we use void as the return type. For example: void kiemtra(int n)

A function CANNOT return more than 1 value.

int is the default return type.

Determine output:

• XIN CHAO LOP DHDI17ATT

• LOP DHDI17ATTXIN CHAO

• LOP DHDI17ATT

• LOP DHDI17ATT XIN CHAO

Choose a correct statement about C Function?

• The name of the function is "kiemtra"

• The function does not return any value

• "n" is the parameter of the function

• All the above

Choose a correct statement about C Function?

• The function kiemtra( ) is called inside the function main( )

• 10 is passed to the function kiemtra( )

• The output is: n duong

• All the above

Choose one or more correct statements about C Function?

• The function does not return any value

• The return type of the function is int

• The function returns both 0 and 1 at the same time

• The function returns 0 if n<0 and returns 1 if n>=0

Given a function declaration: int tinhgt(int n);

Choose one ore more correct statements about calling this function?

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