CODEWITHSUNDEEP
c++vector
user2415924
user2415924

Reputation: 31

vector cannot be initialized by {}

Hi I am a newbie in C++ and I just cannot initialize a vector using {}, even if the code is copied with a book. For example, when I do these 

vector <string> articles {"a", "an", "the"};

And

vector <string> articles = {"a", "an", "the"};

I got these error message respectively: 

Error: expected a ";"

And

Error: initialization with "{...}" is not allowed for object of type "std::vector<std::string, std::allocator<std::string>>"

Would anyone help me out? I believe it should be a simple mistake that I couldn't find out.

Upvotes: 3

Views: 3768

Answers (1)

taocp
taocp

Reputation: 23624

uniform initialization is introduced since C++11, You should use a recent compiler that supports this new feature.

If your compiler does not support this feature, you may try the following:

string arrOfString[3] =  {"a", "an", "the"};
vector<string> articles(arrOfString, arrOfString +3);

EDIT:

with MSVC11, you can do (by courtesy of @chris):

string arrOfString[3] =  {"a", "an", "the"};
vector<string> articles(std::begin(arrOfString), std::end(arrOfString));

Upvotes: 2

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