Call up functions

[masterofthebus]

Hi everyone,

I have a question that is tricking me.

I need to do something like this:
-----------------------------------------------------------

int a;
 
 
void* function(const &function){
    //execute the code of the function here that i sent the address
}
 
int main(){
       a = 0 ;
 
       call(&myFunction);
 
    cout << a ;
}
 
 

----------------------

I don't know if i explained it well but what I need is a function to call another functions by its adress. For example, I use call(&function2); then it runs all function2()

.

[weaknessforcats]

You need a function pointer.

That is, your call() needs an argument that is a pointer to a function that has the correct arguments and return type.

void AFunction(int x, float y)
{
    //etc...
{
 

A pointer to this function would be:

void (*fp)(int, float);
 

Then you can assign the address of AFunction to this pointer:

fp = AFunction;
 

The name of a function is the address of the function so you not code &AFunction.

Then, your call() just has to have a function pointer argument:

void call(void (*fp)(int, float))
{
            //etc...
}
 

Finally, in main() you can make the call:

call(AFunction);
 

Remember, the argments and return type declared in your function pointer must match those of the actual function or you cannot put that function's address into the pointer.