C++ Primer 第四版课后练习解答 习题1.17

 1 #include <iostream>
 2 using namespace std;
 3 
 4 int main()
 5 {
 6     int value,amount = 0;
 7     cout << "Enter values" << endl;
 8     cout << "输入文件结束符‘/0’可以终止输入" << endl;
 9 
10     while (cin>>value)
11     {
12         if (value<0)
13         {
14             ++amount;
15         }
16     }
17     cout <<"amount of all negative values read is "<< amount<<endl;
18     return 0;
19 }