华为机试练习题-在字符串中找出连续最长的数字串

牛客网链接：

https://www.nowcoder.com/questionTerminal/bd891093881d4ddf9e56e7cc8416562d

题目描述：

 

 

#include<iostream>
#include<string>
using namespace std;
 
int main()
{
    string str;
    cin>>str;
    string maxstr;
    int maxlegth = 0;
    string tmp;
     
    for (string::size_type ix = 0; ix < str.length(); ++ix)
    {
        if ((str[ix] >= '0') || (str[ix] <= '9'))
        {
            while((str[ix] >= '0') && (str[ix] <= '9'))
            {
                tmp += str[ix++];
            }
            if (tmp.size() > maxlegth)
            {
                maxstr = tmp;
                maxlegth = tmp.size();
                 
            }
        }
        tmp.clear();
    }
    cout<<maxstr;
    return 0;
}