C++ - Visual Studio - missing type specifier - int assumed

Question

class Space2D {
public:
    vector<Agent> v;
    bool star;

    Space2D() {
        bool star = false;
    }
};

In visual studio this give me a error: missing type specifier - int assumed. I also get errors like syntax error: missing ';' before '<'.

std::vector<Agent> v; Solved this

Have you defined Agent anywhere? Is the h-file where it is defined included? — thorsan, Nov 29 '16 at 09:23
1. useful to know which line the error is referring to. 2. your code is not compileable outside of your machine as it's not complete. — EdChum, Nov 29 '16 at 09:23
@EdChum Apparently it's not compilable inside his machine either :D — Hatted Rooster, Nov 29 '16 at 09:23
@GillBates true, Jan please send your machine to me so I can have a look at this — EdChum, Nov 29 '16 at 09:24
The line vector give me this error. And i have both include's. — Jan Maděra, Nov 29 '16 at 09:27
Do you also have a `using namespace std;` before this code? (Although I personally prefer to write `std::vector` instead of `vector`) — UnholySheep, Nov 29 '16 at 09:29
I recommend "using std::vector;", this will allow one to omit the namespace parts and will still allow one to see where vector comes from and avoids name collisions. — Aziuth, Nov 29 '16 at 10:11

Starl1ght · Accepted Answer · 2016-11-29T09:33:58.963

1

Three possible problems with this code.

Possibly vector header is not included

Fix: #include <vector>

Possibly Agent class is not defined

Fix: include header, where Agent class is defined

Possibly you forgot to write using namespace std; as wrongly recommended by beginner books

Fix: instead of 'vector' on line 7 use std::vector, or do it wrong and write using namespace std;

edited Nov 29 '16 at 09:33

answered Nov 29 '16 at 09:30

Starl1ght

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Thanks a lot. I forgot std:: before vector. – Jan Maděra Nov 29 '16 at 09:32
http://stackoverflow.com/questions/1452721/why-is-using-namespace-std-considered-bad-practice – Simon Kraemer Nov 29 '16 at 11:38

score 1 · Answer 2 · edited May 23 '17 at 10:30

1

Assuming from two error messages you posted and by guessing to which line they correspond to you forget to #include <vector> or you do not have imported std::vector to your namespace (using std::vector; or using namespace std).

I personally would not recommend using either of those usings for reasons and instead wrote std::vector.

edited May 23 '17 at 10:30

Community

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answered Nov 29 '16 at 09:30

Zereges

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C++ - Visual Studio - missing type specifier - int assumed

2 Answers2