C++代码问题

#include <iostream>
using std::cout;
using std::cin;
using std::endl;

int main()
{
int counter = 3;
int number1;
int number2 = 0;
int number3 = 0;
cout << "请输入第1个数" << endl;
cin >> number2;
cout << "请输入第2个数" << endl;
cin >> number3;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
while ( counter <= 10 )
{
cout << "请输入第" << counter << "个数" << endl;
cin >> number1;
if ( number1 > number2 )
if ( number2 > number3 )
{
number2 = number1;
number3 = number2;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else if ( number1 > number3 )
{
number2 = number1;
number3 = number3;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else
{
number2 = number3;
number3 = number1;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else if ( number2 < number3 )
{
number2 = number3;
number3 = number2;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else if ( number1 > number3 )
{
number2 = number2;
number3 = number1;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else
{
number2 = number2;
number3 = number3;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
counter++;
}
return 0;
}

上面这段代码运行后，比如第一次输入12，第二次13，这两个是没什么问题的，第三次输入14，还是没有问题，第四次输入15，就会显示两个15，以后的奇数次输入都能正常显示最大的两个数，偶数次就不行，请问是什么原因，高手指点下！！

#include <iostream>
using std::cout;
using std::cin;
using std::endl;
int main()
{
int counter = 3;
int number1;
int number2 = 0;
int number3 = 0;
cout << "请输入第1个数" << endl;
cin >> number2;
cout << "请输入第2个数" << endl;
cin >> number3;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
while ( counter <= 10 )
{
cout << "请输入第" << counter << "个数" << endl;
cin >> number1;
if ( number1 > number2 )
if ( number2 > number3 )
{
number2 = number1; // 此时的number2已经是number1了
number3 = number2; // 再将number2赋给number3，不就是把number1赋给number3???
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else if ( number1 > number3 )
{
number2 = number1;
number3 = number3;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else
{
number2 = number3;
number3 = number1;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else if ( number2 < number3 )
{
number2 = number3; // 此时的number2已经是number3了
number3 = number2; // 再将number2赋给number3，不就是把number3赋给number3???
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else if ( number1 > number3 )
{
number2 = number2;
number3 = number1;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
else
{
number2 = number2;
number3 = number3;
cout << "目前最大的两个数为:" << number2 << " " << number3 << endl;
}
counter++;
}
return 0;
}

错误在这一句

else if ( number2 < number3 ) { number2 = number3; number3 = number2; }

你的代码我都看了 思路不错，这一句里应该是N1<N2<N3，所以n2和n3都应该保留，就别动他了。

你这样的赋值语句就是n3的值给n2，再把n2的值给n3.但是n2已经是n3了，所以两个数值相等了

可以直接将这两个赋值删除。或者改成跟最后一种一样的

number2 = number2; number3 = number3;