how to check whether execve is successful or not?

[krushnaal pai <krisonearth@xxxxxxxxx>]

i tried to printf the return values of error codes but that wont work bcoz the elf does run successfully(no errors)
As execve doesnt return anything on a successful execve sys call,is there a way to check whether it was successful or not.
neglect the fact that i can see the elf running