running other programs from a c++ program

[jpersons]

I want to make sure that the wget program gets run before a certain program that i'm writing gets run. I know i could just use a script to run wget and then my program but i was wondering if there was anyway to, within a c++ program, tell the shell to run another program (wget in my case).

[cwolf]

#inlcude <stdlib.h>
.
.
system("ls -la");
.
.

[jpersons]

Thank you much!