解决那个让高级C++程序员都会出错的问题。

      上次给大家说了一个题目，呵呵。没有给出大家解决的问题。

      现在给出大家解决方法。

     

// instr2.cpp -- reading more than one word with getline
#include <iostream>
int main()
{
    using namespace std;
    const int ArSize = 20;
    char name[ArSize];
    char dessert[ArSize];

    cout << "Enter your name:\n";
    cin.getline(name, ArSize);  // reads through newline
    cout << "Enter your favorite dessert:\n";
    cin.getline(dessert, ArSize);
    cout << "I have some delicious " << dessert;
    cout << " for you, " << name << ".\n";
    return 0; 
}

 

     大家可以看看输出结果。

     对比一下上次的代码的输出结果。

  

// instr1.cpp -- reading more than one string
#include <iostream>
int main()
{
    using namespace std;
    const int ArSize = 20;
    char name[ArSize];
    char dessert[ArSize];

    cout << "Enter your name:\n";
    cin >> name;
    cout << "Enter your favorite dessert:\n";
    cin >> dessert;
    cout << "I have some delicious " << dessert;
    cout << " for you, " << name << ".\n";
    return 0; 
}

 

关键是cin不会做长度越界判断，这个和scanf类似，

呵呵
您说的很对。