duplicate symbol _main in: / linker command failed with exit code 1

duplicate symbol _main in:iphone

    /Users/mb467/Library/Developer/Xcode/DerivedData/barChartDemo-gevlnavnpanltbgqdweijouguhcx/Build/Intermediates/barChartDemo.build/Debug-iphoneos/barChartDemo.build/Objects-normal/armv7/main-CCADE8545E02147B.oui

    /Users/mb467/Library/Developer/Xcode/DerivedData/barChartDemo-gevlnavnpanltbgqdweijouguhcx/Build/Intermediates/barChartDemo.build/Debug-iphoneos/barChartDemo.build/Objects-normal/armv7/main-3D90E6383DC1F398.ocode

ld: 1 duplicate symbol for architecture armv7orm

clang: error: linker command failed with exit code 1 (use -v to see invocation)ip

 

問題:main.m 文件重複了,刪除其中一個便可it

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