Practice5_2_string_find

// Practice5_string.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <string>
#include <iostream>

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
    /* 字符的遍历
    char* cArray = "2017/3/2 22:40";
    string str(cArray);
    //数组方式
    for(unsigned int i = 0; i < str.size(); i++)
    {
        cout << str[i] << " ";
    }
    cout << endl;

    //正向迭代器方式
    string::iterator it = str.begin();
    for(; it != str.end(); it++)
    {
        cout << *it << " ";
    }
    cout << endl;

    //反向迭代器方式
    string::reverse_iterator itReverse = str.rbegin();
    for(; itReverse != str.rend(); itReverse++)
    {
        cout << *itReverse << " ";
    }
    cout << endl;
    */
    string str("dog bird cat elephant chicken");
    
    //查找字符串
    cout << str.find("bird") << endl;
    cout << (int)str.find("pig") << endl;

    //查找字符
    cout << str.find('i', 7) << endl;
    
    //从末尾查找字符串
    cout << str.rfind("cat") << endl;

    //从末尾查找字符
    cout << str.rfind('c') << endl;

    //查找第一个属于某子串的字符
    cout << str.find_first_of("23d56") << endl;

    //查找第一个不属于某子串的字符
    cout << str.find_first_not_of("dog bird 2017") << endl;

    //查找最后一个属于某子串的字符
    cout << str.find_last_of("23d56") << endl;
    
    //查找最后一个不属于某子串的字符
    cout << str.find_last_not_of("tea") << endl;
    return 0;
}

运行结果：

4
-1
24
9
25
0
9
7
28