QWQ本蒟蒻不知为何报错

本蒟蒻在写潜伏者时不知为何报错
代码：

#include 
#include 
using namespace std;
map<char,char>m;
map<char,int>c;
map<char,int>d;
string a,b,s,k;

int main(){
    char s[14],c;
    cin>>a>>b;
    int u=a.size() ;
    for(int i=0;iif(!c[a[i]]&&!d[b[i]]){
            m[b[i]]=a[i];
            c[a[i]]=1;
            d[b[i]]=1;
        }else{
            cout<<"Failed";
            return 0;
        }
    } 
    cin>>s;
    int o=s.size();
    for(int i=0;iif(d[s[i]]){
            k[i]=m[s[i]];
        }else{
            cout<<"Failed";
            return 0;
        }
    } 
    return 0;
}

报错：
14 13 F:\学习\C++\uhj.cpp [Error] invalid types 'char[char]' for array subscript
16 10 F:\学习\C++\uhj.cpp [Error] invalid types 'char[char]' for array subscript
24 10 F:\学习\C++\uhj.cpp [Error] request for member 'size' in 's', which is of non-class type 'char [14]'

你的头文件没打全