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First, EWWW on the indentation.
Mixing spaces and hard tabs is a mess waiting to happen. Sooner or later, you'll use some tool (say HTML on a forum) which doesn't have the same idea about tabs as...

Describing your problem in such vague terms is never going to work.

Post some actual attempt, then we can probably tell you exactly how to fix it.

We're not interested in "20 questions" posts.

- Convert each number to a string
- Assign each string to consecutive members of an argv
- call exec


Post your attempt.