#include <iostream>

 #include <string>

 #include <cstdlib>

 using namespace std;

 void main()

 {

     //string str("\"C:\\Program Files (x86)\\Tencent\\QQ\\Bin\\QQScLauncher.exe\"");

     //\n不会换行,换行只能在内部换行

     string str(R"("C:\Program Files(x86)\Tencent\QQ\Bin\QQScLauncher.exe")");

     system(str.c_str());

     cin.get();

 }