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  1. #include <stdio.h>
  2.  
  3. /*ここを書く*/
  4. struct fract {
  5.     int bunshi;
  6.     int bunbo;
  7. };
  8.  
  9. int gcd(int m, int n)
  10. {
  11.     int r;
  12.     if (m < n)  return gcd(n, m); /* 常に m > n にしておく  */
  13.     r = m % n;                    /* 余りrが....            */
  14.     if (r == 0) return n;         /* 0 なら n がGCD         */
  15.     return gcd(n, r);             /* でなければnとrのGCD    */
  16. }
  17.  
  18. struct fract wa(struct fract a, struct fract b) {
  19.     a.bunshi = a.bunshi * b.bunbo + b.bunshi * a.bunbo;
  20.     a.bunbo *= b.bunbo;
  21.     return a;
  22. }
  23.  
  24. struct fract seki(struct fract a, struct fract b) {
  25.     a.bunshi *= b.bunshi;
  26.     a.bunbo  *= b.bunbo;
  27.     return a;
  28. }
  29.  
  30. struct fract yakubun(struct fract a) {
  31.     int d;
  32.     d = gcd(a.bunshi, a.bunbo);
  33.     a.bunshi /= d;
  34.     a.bunbo  /= d;
  35.     return a;
  36. }
  37.  
  38.  
  39. int main()
  40. {
  41.     struct fract a1 = {1, 2}; /* 1/2を意味している */
  42.     struct fract a2 = {2, 3}; /* 2/3を意味している  */
  43.     struct fract a3 = {3, 5}; /* 3/5を意味している */
  44.     struct fract a4 = {10, 3}; /* 10/3を意味している */
  45.     struct fract a5;
  46.  
  47.     a5 = yakubun(seki(a3, seki(a4, wa(a3, wa(a1, a2)))));
  48.  
  49.     printf("答：%d / %d \n", a5.bunshi, a5.bunbo);
  50.     return 0;
  51. }
  52.  
Success #stdin #stdout 0.01s 1720KB
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答：53 / 15
https://ideone.com/3u7XRn
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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