文件格式不支持?第一次安装就是这种情况

ld: warning: ignoring file /Users/zhangxin/Documents/workspace/C/hello world, file was built for unsupported file format ( 0x23 0x69 0x6E 0x63 0x6C 0x75 0x64 0x65 0x20 0x3C 0x73 0x74 0x64 0x69 0x6F 0x2E ) which is not the architecture being linked (x86_64): /Users/zhangxin/Documents/workspace/C/hello world
Undefined symbols for architecture x86_64:
“_main”, referenced from:
implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
[Finished in 0.215s]