cannot convert 'std::string {aka std::basic_string}' to 'const char*' for argument '1' to 'int system(const char*) [duplicate]

I have the following code that stimulate as a folder lock:

#include<iostream> #include<conio.h> #include<windows.h> #include<string> #include<fstream> #include<process.h> #define max 100 using namespace std; struct folder_all{ std::string name; std::string location; }; int main(){ folder_all folder[max]; int n; cout<<"\n\n\t\t\tFolder Locker"<<endl; if (std::ifstream("data")) { cout<<"\n\n\tYour Folders are safe with us"<<endl; cout<<"Enter your password to unlock(Password will not be visible): "; HANDLE inHandle = GetStdHandle(STD_INPUT_HANDLE); DWORD mode; GetConsoleMode(inHandle, &mode); SetConsoleMode(inHandle, mode & ~ENABLE_ECHO_INPUT); std::string inpass; cin>>inpass; SetConsoleMode(inHandle, mode); } else{ cout<<"\nNo. of folders to be locked: "; cin>>n; HANDLE inHandle = GetStdHandle(STD_INPUT_HANDLE); DWORD mode; GetConsoleMode(inHandle, &mode); SetConsoleMode(inHandle, mode & ~ENABLE_ECHO_INPUT); //read the password std::string password; cout<<"\nEnter the password(password will not be visible): "; cin>>password; / SetConsoleMode(inHandle, mode); cout<<"\n\n"<<endl; for(int i=0; i<n; i++){ cout<<"Enter folder "<<i+1<<" details:"<<endl<<endl; cout<<"Folder Name: "; cin>>folder[i].name; cout<<"Folder Location: "<<endl<<"\tEnter in following format 'Drivelabel://parent-folder/child-folder/folder'"<<endl; cout<<"\tfor example C://desktop/pics/your-folder"<<endl; cin>>folder[i].location; } std::ofstream o("data"); o <<password<<std::endl; for(int j=0; j<n; j++){ o<<folder[j].location<<std::endl; } system("attrib +h +s +r data"); std::string fold; for(int k=0; k<n; k++){ std::string f = folder[k].location ; fold = "attrib +h +s +r " + f + " "; system(fold); //this line gives me a error } cout<<"\nYour folder/s have been locked"<<endl; cout<<"\nThis application will now exit"<<endl; exit(0); } } 

The code asks the user for a password and then it saves it in a file data and hides the file. When user enters the location of the folder to be locked it then also hide it. but it is not working properly for 1 error the error is:

main.cpp|79|error: cannot convert 'std::string {aka std::basic_string}' to 'const char*' for argument '1' to 'int system(const char*)'|

How to resolve it?