fig08_07.cpp

来自「里面有很多关于编程的实用例子」· C++ 代码 · 共 42 行

// Fig. 8.7: fig08_07.cpp
// Pass-by-reference with a pointer argument used to cube a 
// variable抯 value.
#include <iostream>
using std::cout;
using std::endl;

void cubeByReference( int * ); // prototype

int main()
{
   int number = 5;

   cout << "The original value of number is " << number;

   cubeByReference( &number ); // pass number address to cubeByReference

   cout << "\nThe new value of number is " << number << endl;
   return 0; // indicates successful termination
} // end main

// calculate cube of *nPtr; modifies variable number in main
void cubeByReference( int *nPtr )
{
   *nPtr = *nPtr * *nPtr * *nPtr; // cube *nPtr
} // end function cubeByReference

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