当可以使用库函数时，使用system（）函数是不好的做法吗？为什么？

Say there is some functionality needed for an application under development which could be achieved by making a system call to either a command line program or utilizing a library. Assuming efficiency is not an issue, is it bad practice to simply make a system call to a program instead of utilizing a library? What are the disadvantages of doing this?Say there is some functionality needed for an a