给你两个字符串str1，str2，找出str2在str1中的位置

如题

题目参考链接：

http://blog.csdn.net/hxz_qlh/article/details/14110221

代码来自非原创

#include <iostream>
#include <cstdio>

using namespace std;

char *strstring(char *ParentString,char *SubString)
{
    char *pSubString,*pParentString;
    for(char *pTmp = ParentString; *pTmp !='' ; pTmp++)
    {
        pSubString = SubString;
        pParentString = pTmp;
        while(*pSubString != '' && *pSubString == *pParentString)
        {
            pSubString++;
            pParentString++;
        }
        if(*pSubString == '')
        {
            return pTmp;
        }
    }
    return NULL;
}

int main()
{
    cout << "Hello world!" << endl;
    char *ParentString = "I love TrendMicro!";
    char *SubString = "Trend";
    printf("%s
",strstring(ParentString,SubString));
    return 0;
}