参考:https://bbs.csdn.net/topics/360116265. 问题: 如一个函数如下: int aa( int a, int b ) //举个例子,不要纠结功能. { if(a < b) return (a <= b ) ; //非0 ; //0 } 结论:bool类型(但在C99之前是没有的)其实就是一个特殊的int型,它只有和非0两种情况.(0为false,非0为true).
(1)START_NOT_STICKY If the system kills the service after onStartCommand() returns, do not recreate the service, unless there are pending intents to deliver. This is the safest option to avoid running your service when not necessary and when your app
Go 内建多返回值 支持.这个特性在 Go 语言中经常被用到,例如用来同时返回一个函数的结果和错误信息. Example: package main import "fmt" //(int, int)标志函数有两个int返回值. func example_func(a int, b int) (int, int){ return a, b } func main(){ c, d := example_func(1, 3) //fmt.Printf用来格式化字符串. fmt.Printf
CREATE PROCEDURE [dbo].[GetNameById] @studentid varchar(), @studentname nvarchar() OUTPUT AS BEGIN SELECT @studentname=studentname FROM student WHERE studentid=@studentid RETURN - else RETURN END using (SqlConnection conn = new SqlConnection(connStr)
按照C编译器的约定调用函数时压栈的顺序是从右向左,并且返回值是保存在eax寄存器当中.这个命题本该是成立的,下面用一个小程序来反汇编观察执行过程: #include<stdio.h> int add(int x, int y){ return x+y; } int main(){ int eax=0; int z =0; int x =6; int y =5; z=add(x,y); __asm__( "movl %%eax, %0" :"+b"(eax