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  1. #include <stdio.h>
  2. //引数の絶対値を返す関数
  3. int abs(int x){
  4.     if(x<0){
  5.       x=-1*x;
  6. }return x;
  7. }
  8. //引数の二乗を返す関数
  9. int square(int x){
  10.     return x*x; 
  11. }
  12. //main関数
  13. int main(void) {
  14.     int a,b;
  15.     a = 1;
  16.     b = -2;
  17.     printf("|%d^2 - %d^2| = %d\n",a,b,abs(square(a) - square(b)));
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 5316KB
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Standard input is empty
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|1^2 - -2^2| = 3
https://ideone.com/QbgLRm
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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