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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a = 0, b = 0;
  5.     scanf("%d", &a);
  6.     //a = (a < 0) ? -a : a;
  7.  
  8.     while (a) {
  9.         b = b * 10 + (a % 10);
  10.         a /= 10;
  11.     }
  12.  
  13.     printf("%d\n", b);
  14. 	return 0;
  15. }
  16.  
Success #stdin #stdout 0s 2160KB
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-123
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https://ideone.com/dTHdiA
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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