Use a const pointer parameter : const parameters « Function « C++ Tutorial

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C++ Tutorial » Function » const parameters

7.7.1.Use a const pointer parameter

#include <iostream> 

using namespace std; 

 

int f(const int *val); 

  

int main() 

{ 

  int result; 

  int v = 10; 

 

  result = f(&v); 

 

  cout << v << " fd is " << result; 

  cout << "\n"; 

 

  return 0; 

} 

 

int f(const int *val) 

{ 

  return - *val; 

}

10 fd is -10

7.7.const parameters
	7.7.1.	Use a const pointer parameter
	7.7.2.	const reference

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