View Compilation Error

0_0_34852921_26074.cpp: In function 'int Manacher(char*)':
0_0_34852921_26074.cpp:26:5: error: expected ',' or ';' before 'string'
     string t="$#";
     ^
0_0_34852921_26074.cpp:29:9: error: 't' was not declared in this scope
         t+=s[i];
         ^
0_0_34852921_26074.cpp:32:14: error: 't' was not declared in this scope
     int len2=t.size();
              ^
0_0_34852921_26074.cpp: In function 'int main()':
0_0_34852921_26074.cpp:54:25: error: cannot convert 'std::string {aka std::basic_string<char>}' to 'char*' for argument '1' to 'int Manacher(char*)'
         cout<<Manacher(s)<<endl;
                         ^