What is the problem in this statement of code in the language of C++ using visual studio 2017?

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the problem it is giving is in << operator before str_3
it is saying

Error binary '<<': no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)

What I have tried:

std::string str_3 = "hello";
std::cout << "string str_3 using string class:"<< str_3 <<std::endl;

Posted 21-Jul-18 9:51am

Member NFOC

Updated 21-Jul-18 10:51am

Rick York

v2

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KarstenK 22-Jul-18 4:30am

You missed to include the iostream. The error message is always talking to you ;-)

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Dave Kreskowiak · Accepted Answer · 2018-07-21T10:52:00

Solution 1

This works just fine:

C++

using namespace std;

int main()
{
	string str_3 = "hello";
	cout << "string str3 using string class: " << str_3 << endl;

    return 0;
}

...so long as your "includes" include:

C++

#include <iostream>
#include <string>

Posted 21-Jul-18 10:52am

Dave Kreskowiak

Updated 21-Jul-18 14:20pm

v3