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  1. #include <stdio.h>
  2. int S(int a) {
  3.     for (int i = 0; i * i <= a; i++)
  4.         if (i * i == a) return 1;
  5.     return 0;
  6. }
  7. int main() {
  8.     int a;
  9.     printf("Enter an integer: ");
  10.     scanf("%d", &a);
  11.     printf("%s\n", S(a) ? "yes" : "not");
  12.     return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5272KB
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stdout
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Enter an integer: yes
https://ideone.com/eLhHob
language:
C (gcc 8.3)
created:
4 hours ago
visibility:
public

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