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Language

C++

Compiler

clang HEAD 12.0.0 (https://github.com/llvm/llvm-project.git 035396197a5f129c5ec42e9e46a85c32fa1c1b84)

Options
Warnings
Boost 1.73.0
C++2a
no pedantic

$ clang++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/clang-head/include -std=c++2a 
prog.cc:12:26: warning: expression result unused [-Wunused-value]
    printf("\n%d",arr[0][1,0]);   // C4709
                         ^
prog.cc:12:27: warning: top-level comma expression in array subscript is deprecated [-Wdeprecated-comma-subscript]
    printf("\n%d",arr[0][1,0]);   // C4709
                  ~~~~~~~~^~~
2 warnings generated.


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