How do I execute external program within C code in

Question

I want to execute another program within C code. For example, I want to execute a command

./foo 1 2 3

foo is the program which exists in the same folder, and 1 2 3 are arguments. foo program creates a file which will be used in my code.

How do I do this?

Answer 1

How about like this:

char* cmd = "./foo 1 2 3";
system(cmd);