int numb (char String[]) ??? what does this mean?

[Aitra]

hi guys

I'm new to arrays and officially have no idea of what this line means:

int numb (char String[])

what kind of idea does it give you? I've learned an array could look something like

string[2]= {1,3}

for instance

but what it means when it's an argument of some int variable?(variable here is numb)

[Salem]

> int numb (char String[])
It says
- numb is a function,
- it takes a single parameter which has the name String, and it is an array of characters (actually, it will be a pointer),
- it returns an integer result.
If you know about strlen(), then you know how to use it.

[std10093]

I would guess that he is a beginner in functions and probably haven't heard of strlen.

A function's prototype has the following format :
arg stands for argument

returnValue functionName(typeOfArgOne argOne, typeOfArgTwo argTwo, ...);

Let's have some examples of function's prototypes (declarations).
Example No. 1
A function named foo, that returns an integer and has as argument an integer.

int foo(int number);

Example No. 2
A function named foo2, that returns an integer and has as argument two integers.

int foo2(int a, int b);

Example No. 3
A function named foo3, that returns an integer and has zero arguments.
Tip : When no arguments are needed, we write void.

int foo3(void);

Example No. 4
A function named foo, that returns nothing and has as argument an integer.
Tip : We write void as return value.

void foo4(int number);

Example No. 5
A function named foo5, that returns an integer and has as argument a character.

int foo5(char c);

Example No. 6
A function named foo6, that returns an integer and has as argument an array of characters (thus a word, a string).

int foo6(char String[]);

Hope this helps a bit.

[laserlight]

Example No. 6
A function named foo6, that returns an integer and has as argument an array of characters (thus a word, a string).

int foo6(char String[]);

The parameter in this case is actually a pointer to char, but because an array is converted to a pointer to its first element when passed as an argument, you can thus pass an array as the argument to foo6.

[std10093]

Thanks laserlight for pointing that out!