注意參數傳遞要引用

#include<iostream>#include<algorithm>#include<vector>#include<map> #include<string>#include<set>using namespace std;struct rec{	string name;	string pw;}; vector<rec> mod_rec;bool ismod(string &s){ 	bool flag = true;	for(int i = 0; i < s.size(); i++){		if(s[i] == '1'){			s[i] = '@';			flag = false;		}		else if(s[i] == '0'){			s[i] = '%';			flag = false;		}		else if(s[i] == 'l'){			s[i] = 'L';			flag = false;		}		else if(s[i] == 'O'){			s[i] = 'o';			flag = false;		}	}	if(flag == true) return true;	else return false;}int main(){	int n;	cin>>n;	for(int i = 0; i < n; i++){		rec a;		cin>>a.name>>a.pw;		if(!ismod(a.pw)){			mod_rec.push_back(a);		}	}	int count = mod_rec.size();	if(count == 0){		if(n == 1){			PRintf("There is %d account and no account is modified",n);		}		else{			printf("There are %d accounts and no account is modified",n);		}	}	else{		cout<<count<<endl;		for(int i = 0; i < mod_rec.size(); i++){			printf("%s %s/n",mod_rec[i].name.c_str(),mod_rec[i].pw.c_str());		}	}	return 0;}