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Challenges

Comments on It's Hip to be Square

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It's Hip to be Square

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Challenge

A catalogue type challenge that simply asks: Given an integer n (where n>=0) as input return a truthy value if n is a perfect square or a falsey value if not.


Rules

  • You may take input by any reasonable, convenient means.
  • You need not handle inputs greater than what your chosen language can natively handle nor which would lead to floating point inaccuracies.
  • Output should be one of two consistent truthy/falsey values (e.g., true or false, 1 or 0) - truthy if the input is a perfect square, falsey if it's not.
  • This is code-golf so lowest byte count wins.

Test Cases

Input:  0
Output: true

Input:  1
Output: true

Input:  64
Output: true

Input:  88
Output: false

Input:  2147483647
Output: false
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C (gcc), 57 64 bytes

x,s;main(){scanf("%d",&x);s=sqrt(x);printf("%d",s*s==x);}

Try it online!

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1 comment thread

Strictly speaking, both outputs here are truthy as they're both non-empty strings. (4 comments)
Strictly speaking, both outputs here are truthy as they're both non-empty strings.
Shaggy‭ wrote over 3 years ago

Strictly speaking, both outputs here are truthy as they're both non-empty strings.

Lundin‭ wrote over 3 years ago

Shaggy‭ No idea what you mean. The task is to print a string "true" or "false".

Shaggy‭ wrote over 3 years ago

No, the task is to output a truthy or falsey value. Any non-empty string is truthy.

Lundin‭ wrote over 3 years ago

Shaggy‭ Oh I misunderstood it then. Means I can easily shave this down some more.