提交记录 #1

code.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    1 | msin(){}
      | ^~~~
code.c: In function ‘msin’:
code.c:1:8: warning: control reaches end of non-void function [-Wreturn-type]
    1 | msin(){}
      |        ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status