ZCMU - 4925: 字符串的查找删除

#include<bits/stdc++.h>#include<cmath>#include <string.h>#define mem(a,b) memset(a,b,sizeof a)#define ssclr(ss) ss.clear(), ss.str("")#define INF 0x3f3f3f3f#define MOD 1000000007usingnamespacestd;
typedeflonglongll;
intmain()
{
strings1,s2,s;
cin>>s;
transform(s.begin(),s.end(),s.begin(),::tolower);
intlen=s.length();
getchar();
while(getline(cin,s1))
    {
s2=s1;
transform(s1.begin(),s1.end(),s1.begin(),::tolower);
intidx=s1.find(s);
while(idx!=string::npos)
        {
s1.erase(idx,len);
s2.erase(idx,len);
idx=s1.find(s,idx);
        }
idx=s1.find(" ");
while(idx!=string::npos)
        {
s1.erase(idx,1);
s2.erase(idx,1);
idx=s1.find(" ",idx);
        }
printf("%s\n",s2.c_str());
    }
return0;
}