About functions

[beginers of c]

What's the actual use of declaring any function globally
for eg
#include<stdio.h>
int add() //function
void main()
{
}

 

[James Kuyper]

What's the actual use of declaring any function globally
for eg
#include<stdio.h>
int add() //function
void main()
{
}

So you only have to declare it once, rather than separately in each
subroutine. If you only have one subroutine in the file (as above), then
it doesn't make much difference.

 

[Barry Schwarz]

What's the actual use of declaring any function globally
for eg
#include<stdio.h>
int add() //function

If you don't include the parameter types, not much. If you include
the parameter types (and add the required , this becomes a prototype
and the compiler can syntax-check your function calls.

void main()

And you might as well define main properly if you intend to ask for
help here.