编程

爱到底

包含相应的头文件试试

设备上下文 =Device ContextDevice 就是关联的设备. 编程时和硬件或软件环境交互必须的对象. 获取他,访问他,修改他,就等于操作了硬件或软件.

以下，是用C写的代码，通过编译，正常运行。#include <stdio.h>#include <windows.h>#define TIMELEFT (24)int quitFlag; //退出标志int stopFlag; //停止标志int resetFlag; //重设标志int nTime; //时间//倒计时函数DWORD WINAPI TimeStart(){ while (quitFlag != 1) { while(stopFlag == 1) { Sleep(500); } system("cls.exe"); if (nTime == -1) { //倒计时结束 printf("the time is over!"); return 0; } printf("time left : %d", nTime); nTime--; //等待1秒 Sleep(1000); } return 0;}void main(void){ HANDLE hTime; DWORD dwID; char cChar; nTime = TIMELEFT; quitFlag = 0; stopFlag = 0; resetFlag = 0; //创建倒计时线程，启动倒计时函数 hTime = CreateThread(NULL, 0, TimeStart, NULL, NULL, &dwID); if (hTime != NULL) { SetThreadPriority(hTime, THREAD_PRIORITY_LOWEST); } while (1) { cChar = getch(); if (cChar == 27) { /* press ESC to quit*/ //按ESC退出 stopFlag = 1; quitFlag = 1; break; } if (cChar == "1") { //按1重新设定24秒 nTime = TIMELEFT; } else { //按任意按键停止或继续倒计时 stopFlag ^= 1; } }}

time out是 英文 “超时” 的意思。编程输出time out， 是告诉 “超时”了。例如，要求在多少秒内必须拍入信息或响应提示，在规定时间内没有完成拍入或响应，就是超时了。

编程语言？

sliding contact coil 滑动接点线圈sliding contact 滑动触点contact [] contacted contacting contacts [k?n“t2kt”k…n-t2kt“ ] n. 接触, 联系vt. 接触, 联系[NOUN] close interaction; "they kept in daily contact"; "they claimed that they had been in contact... ; "litmus paper turns red on contact with an acid" the act of touching physically; "her fingers camecoil [] coiled coiling coils v. 盘绕, 卷[NOUN] a structure consisting of something wound in a continuous series of loops; "a coil of rope" a round shape formed by a series of concentric circles a transformer that supplies high voltage tosliding []adj. 滑行的, 变化的[#slide] contact lens n. 隐形眼镜[NOUN] a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication choke coil 抗流圈， 扼流圈， 节流圈[NOUN] a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current coil spring 卷簧, 圆簧, 盘簧, 螺旋弹簧, 圆弹簧[NOUN] a spring in the shape of a coil field coil 励磁线圈， 激励线圈[NOUN] the electric coil around a field magnet that produces the magneto motive force to set up the flux in an electric machine primary coil 初级线圈， 主线圈， 原线圈[NOUN] coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit; "current through the primary coil induces current in the secondary

哪一句呀？！

#include <unistd.h>而不是stdlib.h你可以试试

#include<iostream>using namespace std;int Ave(int *pAry, int nLen) { int sum = 0; for (int i = 0; i < nLen; i+=2) { sum += pAry[i]; } return sum / ((nLen + 1) / 2);}int main() { int ary[10] = {1,2,3,4,5,6,7,8,9,10}; cout << Ave(ary, 10) << endl; return 0;}