string.search查找输入中包含的单词

Question

我想创建一个函数来搜索从cin getline为多个单词保存的字符串。我已经找到了一个例子，我将在下面给出如何只搜索一个单词。

#include <string>
#include <iostream>

using namespace std;

int main()
{
string sentence = "My scanner is not working.";
cout << "sentence: " << sentence << endl;

string search;
size_t pos;

search = "printer";
pos = sentence.find(search);
if (pos != string::npos)
    cout << "sentence contains " << search << endl;
else
    cout << "sentence does not contain " << search << endl;

search = "scanner";
pos = sentence.find(search);
if (pos != string::npos)
    cout << "sentence contains " << search << endl;
else
    cout << "sentence does not contain " << search << endl;

return 0;
}

我如何搜索多个单词??

Answer 1

如何使用循环？

#include <string>
#include <iostream>

using namespace std;

int main()
{
    string sentence = "My scanner is not working.";
    cout << "sentence: " << sentence << endl;

    string search[] =
    { "printer", "scanner", "working" };

    for (size_t i = 0; i < sizeof(search) / sizeof(search[0]); i++)
    {
        size_t pos = sentence.find(search[i]);
        if (pos != string::npos)
            cout << "sentence contains " << search[i] << endl;
        else
            cout << "sentence does not contain " << search[i] << endl;
    }

    return 0;
}