运行 ID: 20708

Main.cc: In function ‘int Combin2(int*, int, int, int)’:
Main.cc:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status