Undefined Reference Error When Calling A Function

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Compiler Output

/opt/compiler-explorer/gcc-13.2.0/bin/../lib/gcc/x86_64-linux-gnu/13.2.0/../../../../x86_64-linux-gnu/bin/ld: /lib/x86_64-linux-gnu/crt1.o: in function ​`_start':
(.text+0x24): undefined reference to ​`main'
collect2: error: ld returned 1 exit status
Build failed

NDreizin#0081 | c++ | x86-64 gcc 13.2 | godbolt.org