#include <iostream>

#include <string>

using namespace std;

int main(){

string s="abcde";

cout<<s<<endl;

string s1(3,'a');

cout<<s1<<endl;

string s2({'a','b','c','d','e'});

cout<<s2<<endl;

string str="abcde";

string s3(str);

cout<<s3<<endl;

char c4[]="abcdefghij";

string s4(begin(c4)+3,end(c4)-2);

cout<<s4<<endl;

string s5("abcdefghij",3);

cout<<s5<<endl;

char c6[]="abcdefghij";

string s6(c6,3,4);

cout<<s6<<endl;

return 0;

}