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  1. Read*,n 
  2. Do n=2,99
  3. Do i=2,n/2
  4. If(mod(n,i).eq.0)goto 7
  5. Enddo
  6. Enddo
  7. Print*,'this is prime number=',n
  8. stop
  9. 7 print*,'this number is not prime=',n
  10. Stop
  11. end
Success #stdin #stdout 0.01s 5292KB
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 this number is not prime=           4
https://ideone.com/Dm43ql
language:
Fortran (gfortran 8.3)
created:
3 days ago
visibility:
public

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