C++截取字符串子串实现

http://www.open-open.com/code/view/1439430860036

2015.08

#include<iostream>#include<stdio.h>#include<string>using namespace std;int substr(char *str,unsigned start, unsigned len){    string temp;    for(unsigned curr=start;curr<start+len;curr++){        char tmp=str[curr];        temp+=tmp;    }    cout<<temp<<endl;   return 0;}int main(){    char *test="wewesdsfadfdss";    substr(test,3,3);    return 0;}