コンパイルするとこのようなエラーが出るのでが、何が問題なのでしょうか?
C++
1#include <iostream> 2 3int main(int argc, const char * argv[]) { 4 // insert code here... 5 std::cout << "Hello, World!\n"; 6 return 0; 7} 8
C++
1Ld /Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Products/Debug/C++test normal x86_64 (in target: C++test) 2 cd /Users/jojo/Downloads/cpp/C++test 3 export MACOSX_DEPLOYMENT_TARGET=10.14 4 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -L/Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Products/Debug -F/Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Products/Debug -filelist /Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Intermediates.noindex/C++test.build/Debug/C++test.build/Objects-normal/x86_64/C++test.LinkFileList -mmacosx-version-min=10.14 -Xlinker -object_path_lto -Xlinker /Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Intermediates.noindex/C++test.build/Debug/C++test.build/Objects-normal/x86_64/C++test_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -stdlib=libc++ -Xlinker -dependency_info -Xlinker /Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Intermediates.noindex/C++test.build/Debug/C++test.build/Objects-normal/x86_64/C++test_dependency_info.dat -o /Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Products/Debug/C++test 5 6duplicate symbol _main in: 7 /Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Intermediates.noindex/C++test.build/Debug/C++test.build/Objects-normal/x86_64/main.o 8 /Users/jojo/Library/Developer/Xcode/DerivedData/C++test-biozxlpqgafzohfunlzpukwunozv/Build/Intermediates.noindex/C++test.build/Debug/C++test.build/Objects-normal/x86_64/aiueo.o 9ld: 1 duplicate symbol for architecture x86_64 10clang: error: linker command failed with exit code 1 (use -v to see invocation) 11
C++
1#aiueo.cppの内容です 2 3#include <iostream> 4int main(int argc, const char * argv[]) { 5 // insert code here... 6 std::cout << "HelloWorld!\n"; 7 return 0; 8} 9
#aiueo.hppの内容です #ifndef aiueo_hpp #define aiueo_hpp #include <stdio.h> #endif /* aiueo_hpp */
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