title: backup mysql database from Qt C++
body: <p>mysqldump -uroot -pmysql test> C/backup/test.sql</p>
  
  <p>If I run the command above in commandline, it will do a backup for my database "test"</p>
  
  <p>Now, I tried to use the same command inside my Qt C++ code, but it did not work, while I can insert,delete,and update my "test" database easily with no problems.</p>
  
  <p>anyhelp please.</p>