Output shows "not prime" regardless of the input given

#1

Question is as follows:

  1. You’ve to check whether a given number is prime or not.
  2. Take a number “t” as input representing count of input numbers to be tested.
  3. Take a number “n” as input “t” number of times.
  4. For each input value of n, print “prime” if the number is prime and “not prime” otherwise.

This is my code:

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The output is showing “not prime” regardless of the no. What’s the mistake?

#2

hi @yanshigoyal1221_811b6a2e867b2070
Run the inner loop till j < n
Also u haven’t taken the input of n…
It should work fine…

#3

@yanshigoyal1221_811b6a2e867b2070


corrected code… it’s working fine now… if there is still anything do let me know…

#4

I noticed that when I write cin>>n inside the first for loop, it shows correct output. but upon writing cin>>n before starting the loop ( I mean in the first few lines where the n is initialized), it gives the wrong output. Why is it so?

#5

just bcoz u have to take input of n for every test case (ie t times)… but when u take input of n outside the for loop, then u are taking input only once… hence it will work correct only for one test case… for remaining t-1 test cases it will give wrong ans…
Hope it clears your doubt…

#6

@yanshigoyal1221_811b6a2e867b2070
I hope it’s clear now???

#7

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