字符串匹配

#include<bits/stdc++.h>using namespace std;int main(){    string a,b;    while(cin>>a>>b)    {        int i;        for(i=0; i<a.size(); i++)            if(b.find(a[i])==-1)break;        if(i==a.size())cout<<"true"<<endl;        else cout<<"false"<<endl;    }    return 0;}