CODEWITHSUNDEEP
c++stringmacros
alec.tu
alec.tu

Reputation: 1757

c++: concat constant string with macro-defined string

I want to concat the constant string and the macro defined string.

#define DEEP_DRIVE_NET "C:/Users/tumh/hookv/deep_drive_model.prototxt"
#define DEEP_DRIVE_WEIGHT "C:/Users/tumh/hookv/caffe_deep_drive_train_iter_35352.caffemodel"
CHECK(file_exist(DEEP_DRIVE_WEIGHT)) << "Net Weight " + DEEP_DRIVE_WEIGHT + " Not Found";
CHECK(file_exist(DEEP_DRIVE_NET)) << "Net definition " + DEEP_DRIVE_NET + " Not Found";

the compile error from msvc 2013 compiler is 

C:\Users\tumh\hookv\samples\Test\Inference.cpp(28): error C2110: '+' : cannot add two pointers [C:\Users\tumh\hookv\build\NativeTrainer.vcxproj]
C:\Users\tumh\hookv\samples\Test\Inference.cpp(29): error C2110: '+' : cannot add two pointers [C:\Users\tumh\hookv\build\NativeTrainer.vcxproj]

How can I concatenate such strings?

Thanks.

Upvotes: 1

Views: 1479

Answers (1)

πάντα ῥεῖ
πάντα ῥεῖ

Reputation: 1

Just omit the + operations to concatenate c-style string literals:

CHECK(file_exist(DEEP_DRIVE_WEIGHT)) << "Net Weight " DEEP_DRIVE_WEIGHT " Not Found";
CHECK(file_exist(DEEP_DRIVE_NET)) << "Net definition " DEEP_DRIVE_NET " Not Found";

Upvotes: 3

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