概述
本文章学习:
1、system
函数调用
2、#include <windows.h>
的添加
3、主程序
1、& 2、了解system
函数的运用
system
函数可以调用windows的程序,但必须先导入windows.h
模块
示例代码:
#include <bits/stdc++.h>
#include <windows.h>
int main()
{
system ("notepad");
return 0;
}
学过cmd的朋友都知道,在命令提示符
中输入notepad
可以打开记事本,在C++中,同样可以用system
函数做到这点。
因此,只要我们把用户输入的各种可能用if
语句写出来,就可以实现C++的运行程序了(Win+R打开运行窗口)
3、程序优化
目前,我们的程序代码还是这样的:
#include <bits/stdc++.h>
#include <windows.h>
#include <cmath>
using namespace std;
int main(void)
{
cout << "此程序为C++编写的Windows运行程序,与原版运行有着相似的功能. . ." <<endl;
cout << "作者:Jerry"<<endl;
cout << "请输入指令: ";
string input;
cin >> input;
if(input == "cmd")
{
cout << "打开系统cmd"<<endl;
system ("cmd.exe");
cout << "请输入指令: ";
}
if(input == "notepad")
{
cout << "打开记事本"<<endl;
system ("notepad.exe");
cout << "请输入指令: ";
}
if(input == "mspaint")
{
cout << "打开画图"<<endl;
system ("mspaint.exe");
cout << "请输入指令: ";
}
if(input == "shutdown")
{
cout << "警告: 系统即将关机, 是否继续, 继续按 Enter ,否则直接退出"<<endl;
system ("pause");
system ("shutdown -s -t 60");
cout << "请输入指令: ";
}
if(input == "shutd_false")
{
cout << "此命令可取消定时关机"<<endl;
system ("shutdown -a");
cout << "已取消关机"<<endl;
cout << "请输入指令: ";
}
if(input == "winver")
{
cout << "查看系统版本"<<endl;
system ("winver");
cout << "请输入指令: ";
}
if(input == "slmgr.vbs")
{
cout << "查看系统激活状态"<<endl;
system ("slmgr.vbs -dlv");
cout << "请输入指令: ";
}
if(input == "calc")
{
cout << "打开计算器"<<endl;
system ("calc");
cout << "请输入指令: ";
}
if(input == string("exit")) {
cout << "感谢您的使用..." << endl;
cout << "未经作者允许, 禁止转载"<<endl;
cout << "2019 - 2022 Jerry. All Rights Reserved."<<endl;
break;
}
if(input == "chkdsk")
{
cout << "磁盘扫描工具"<<endl;
cout << "默认扫描C盘"<<endl;
system ("chkdsk C:");
cout << "请输入指令: ";
}
if(input == "tree")
{
cout << "显示树形目录"<<endl;
cout << "默认为C盘"<<endl;
system ("tree C:");
cout << "请输入指令: ";
}
if(input == "dir")
{
cout << "显示所有文件"<<endl;
cout << "默认参数为: dir /s /a"<<endl;
system ("dir /s /a");
cout << "请输入指令: ";
}
if(input == "taskmgr")
{
cout << "打开任务管理器"<<endl;
system ("taskmgr.exe");
cout << "请输入指令: ";
}
if(input == "explorer")
{
cout << "打开桌面资源管理器";
system ("explorer.exe");
cout << "请输入指令: ";
}
if(input == "systeminfo")
{
cout << "系统配置信息"<<endl;
system ("systeminfo");
cout << "请输入指令: ";
}
if(input == "ping")
{
cout << "对IP地址发送数据包"<<endl;
cout << "默认参数: ping 127.0.0.1 -t -l 65500"<<endl;
system ("ping 127.0.0.1 -t -l 65500");
cout << "请输入指令: ";
}
return true;
}
运行后可以发现,程序只让用户输入了一次,执行命令后就关闭了。。。
这怎么行呢?难道用户想执行多个程序还要重开吗?
我们只需要在主程序的适当位置加上
while(true)
{
... //中间的程序(省略)
}
让用户重复输入命令
最终代码:
#include <bits/stdc++.h>
#include <windows.h>
#include <cmath>
using namespace std;
int main(void)
{
system ("title 命令提示符");
cout << "此程序为C++编写的Windows运行程序,与原版运行有着相似的功能. . ." <<endl;
cout << "作者:Jerry"<<endl;
cout << "请输入指令: ";
while(true){
string input;
cin >> input;
if(input == "cmd")
{
cout << "打开系统cmd"<<endl;
system ("cmd.exe");
cout << "请输入指令: ";
}
if(input == "notepad")
{
cout << "打开记事本"<<endl;
system ("notepad.exe");
cout << "请输入指令: ";
}
if(input == "mspaint")
{
cout << "打开画图"<<endl;
system ("mspaint.exe");
cout << "请输入指令: ";
}
if(input == "shutdown")
{
cout << "警告: 系统即将关机, 是否继续, 继续按 Enter ,否则直接退出"<<endl;
system ("pause");
system ("shutdown -s -t 60");
cout << "请输入指令: ";
}
if(input == "shutd_false")
{
cout << "此命令可取消定时关机"<<endl;
system ("shutdown -a");
cout << "已取消关机"<<endl;
cout << "请输入指令: ";
}
if(input == "winver")
{
cout << "查看系统版本"<<endl;
system ("winver");
cout << "请输入指令: ";
}
if(input == "slmgr.vbs")
{
cout << "查看系统激活状态"<<endl;
system ("slmgr.vbs -dlv");
cout << "请输入指令: ";
}
if(input == "calc")
{
cout << "打开计算器"<<endl;
system ("calc");
cout << "请输入指令: ";
}
if(input == string("exit")) {
cout << "感谢您的使用..." << endl;
cout << "未经作者允许, 禁止转载"<<endl;
cout << "2019 - 2022 Jerry. All Rights Reserved."<<endl;
break;
}
if(input == "chkdsk")
{
cout << "磁盘扫描工具"<<endl;
cout << "默认扫描C盘"<<endl;
system ("chkdsk C:");
cout << "请输入指令: ";
}
if(input == "tree")
{
cout << "显示树形目录"<<endl;
cout << "默认为C盘"<<endl;
system ("tree C:");
cout << "请输入指令: ";
}
if(input == "dir")
{
cout << "显示所有文件"<<endl;
cout << "默认参数为: dir /s /a"<<endl;
system ("dir /s /a");
cout << "请输入指令: ";
}
if(input == "taskmgr")
{
cout << "打开任务管理器"<<endl;
system ("taskmgr.exe");
cout << "请输入指令: ";
}
if(input == "explorer")
{
cout << "打开桌面资源管理器";
system ("explorer.exe");
cout << "请输入指令: ";
}
if(input == "systeminfo")
{
cout << "系统配置信息"<<endl;
system ("systeminfo");
cout << "请输入指令: ";
}
if(input == "ping")
{
cout << "对IP地址发送数据包"<<endl;
cout << "默认参数: ping 127.0.0.1 -t -l 65500"<<endl;
system ("ping 127.0.0.1 -t -l 65500");
cout << "请输入指令: ";
}
}
return true;
}
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