c++ - Error: does not name a type (using auto) -

i studying auto c++ primer 5th edition. gave me examples such as:

auto item = val1 + val2;

from understand auto tells type forms expression make. did own:

int test1 = 69, test2 = 72; auto test3 = test1 + test2;

but got error: " 'test3' not name type"

what mean? though test3 become same type test1,test2 int.

i run example without --std=c++11, fails same error message.

try configure codeblocks again this suggests.

or can run code hand g++ --std=c++11 code.cc.

to see if c++11 enabled, can type more c++11 code, declaring nested vector vector<vector<int>> vv; see if deals >> well.

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