STL str replace

#include <iostream>

#include <string>

using namespace std;

void main()

{

    string s="Hello Lucy!";

    //s.replace(5,1,"Lily");

    //"Lucy" -> "Lily"

    int indexStart=s.find("Lucy");

    string l("Lily");

    int len=l.length();

    if (indexStart>=)

    {

        s.replace(indexStart,len,"Lily");

    }

    cout<<s<<endl;

}

//

// Hello Lily!

// Press any key to continue

#include <iostream>

#include <string>

using namespace std;

void main()

{

    string s="Hello Lucy!I am Jim";

    //s.replace(5,1,"Lily");

    //"Lucy" -> "Lily"

    string l("Jim");

    int indexStart=s.find(l);

    int len=l.length();

    if (indexStart>=)

    {

        s.replace(indexStart,len,"Lily");

    }

    cout<<s<<endl;

}

// Hello Lucy!I am Lily

// Press any key to continue