Main.cc: In function 'int mian()':
Main.cc:20:1: warning: no return statement in function returning non-void [-Wreturn-type]
   20 | }
      | ^
/usr/lib/gcc/x86_64-alpine-linux-musl/12.2.1/../../../../x86_64-alpine-linux-musl/bin/ld: /usr/lib/gcc/x86_64-alpine-linux-musl/12.2.1/../../../../lib/crt1.o: in function `_start_c':
/home/buildozer/aports/main/musl/src/1.2.4/crt/crt1.c:18: undefined reference to `main'
collect2: error: ld returned 1 exit status