関連ワード:  error non-void function does not return a value in all control paths -werror -wreturn-type    error non-void function does not return a value in all control paths    error non-void function does not return a value -werror -wreturn-type    error non-void function does not return a value    non-void function does not return a value    non-void function does not return a value -wreturn-type  
結果 : error non-void function does not return a value