一个C++程序在ANJUTA中!

Andy84920

#include <iostream.h>
void function1 (int );
void function2 (int );
void function3 (int );

int main (void)
{
   void (*f[3])(int)={function1,function2,function3};
   int choice;

  cout <<"Enter a number between 0 and 1, 2 to end: ";
  cin >>choice;
  
  while (choice>=0 && choice <3)
     {
       (*f[choice])(choice);
       cout <<"Enter a number between 0 and 1,2 to end: ";
       cin >> choice;
     }
  cout << "rogram execution completed." << endl;
  return 0;
}

void function1 (int a)
{
   cout << "You entered " << a
        << "so function1 was called\n\n";
}

void function2 (int b)
{
   cout << "You entered " << b
        << "so funciont2 was called\n\n";
}

void function3 (int c)
{
   cout << "You entered " << c
        << "so function3 was called\n\n";
}                           

这样的程序.为什么有这样的警告呢?

libinary

因为根据标准，包含文件是没有.h的，应该是
#include <iostream>
using namespace std;
名称空间看你喜欢什么样的用法了。