How a function pointer may be used to access a member function?

Prototype of a function pointer of a member function of a class is

<function return> 
(<class name>::*<function pointer variable name>)
(<function arguments>);
Example:
class class1
{
  void function(void)
  {
  }
};
int main (int argc, char *argv[])
{
  void (class1::*funct_ptr)(void);
  class1 c1;
  funct_ptr = c1.function;
  (c1.*funct_ptr)();
}

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