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  1. /*
  2.   Copyright 2011 Marek "p2004a" Rusinowski
  3.   Euclidean algorithm
  4. */
  5. #include <cstdio>
  6.  
  7. int gcd(int a, int b) {
  8.   return b ? gcd(b, a % b) : a;
  9. }
  10.  
  11. int main() {
  12.   int a, b;
  13.   scanf("%d %d", &a, &b);
  14.   printf("%d\n", gcd(a, b));
  15.   return 0;
  16. }
  17.  
stdin
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12 30
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:13: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result
stdout
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6
https://ideone.com/wM7sB
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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