Use a function prototype to enforce strong type checking : function prototype « Function « C++ Tutorial

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C++ Tutorial » Function » function prototype

7.2.1.Use a function prototype to enforce strong type checking

#include <iostream> 

#include <cstdlib> 

using namespace std; 





void f(int i); // prototype 

 

int main() 

{ 

  int x = 10;   

  f(x);

 

  return 0; 

} 

 

void f(int i) 

{ 

  i = i * i;  

  cout << i;

}

7.2.function prototype
	7.2.1.	Use a function prototype to enforce strong type checking
	7.2.2.	Use a function's definition as its prototype, appears before main
	7.2.3.	Returning a pointer from function

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