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string2.cpp

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#include <iostream>

#include <string>

using namespace std;

int main()

{

string str1 = "Hello";

string str2 = "World";

string str3;

int len;

// copy str1 to str3

str3 = str1;

cout << "str3 : " << str3 << endl;

// connect str1 to str2

str3 = str1 + str2;

cout << "str3 : " << str3 << endl;

// get length of str3

len = str3.size();

cout << "str3.size() : " << len << endl;

return 0;

}