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  1.  
  2.  
  3.  
  4. #include<bits/stdc++.h>
  5. using namespace std;
  6.  
  7. int gcd(int a,int b)
  8. {
  9.     a=abs(a);
  10.     b=abs(b);
  11.     if(a<b) swap(a,b);
  12.     if(b==0) return a;
  13.     return gcd(b,a-b);
  14. }
  15.  
  16. struct PhanSo{
  17.     int x,y;
  18. };
  19.  
  20. void nhap(PhanSo &a,PhanSo &b){
  21.     cin>>a.x>>a.y;
  22.     cin>>b.x>>b.y;
  23. }
  24. void tong(PhanSo a,PhanSo b)
  25. {
  26.     PhanSo p;
  27.     p.x=a.x*b.y+a.y*b.x;
  28.     p.y=a.y*b.y;
  29.     int c=gcd(p.x,p.y);
  30.     p.x/=c;
  31.     p.y/=c;
  32.     cout<<p.x<<"/"<<p.y<<endl;
  33.  
  34. }
  35.  
  36. void hieu(PhanSo a,PhanSo b)
  37. {
  38.  
  39.     PhanSo p;
  40.     p.x=a.x*b.y-b.x*a.y;
  41.     p.y=a.y*b.y;
  42.     int c=gcd(p.x,p.y);
  43.     cout<<p.x/c<<"/"<<p.y/c<<endl;
  44. }
  45.  
  46. void tich(PhanSo a,PhanSo b)
  47. {
  48.     PhanSo p;
  49.     p.x=a.x*b.x;
  50.     p.y=a.y*b.y;
  51.     int c=gcd(p.x,p.y);
  52.     p.x/=c;
  53.     p.y/=c;
  54.      cout<<p.x<<"/"<<p.y<<endl;
  55. }
  56.  
  57. void thuong(PhanSo a,PhanSo b)
  58. {
  59.     PhanSo p;
  60.     p.x=a.x*b.y;
  61.     p.y=a.y*b.x;
  62.     int c=gcd(p.x,p.y);
  63.     p.x/=c;
  64.     p.y/=c;
  65.      cout<<p.x<<"/"<<p.y<<endl;
  66. }
  67.  
  68. int main()
  69. {
  70.     PhanSo a,b;
  71.     nhap(a,b);
  72.     tong(a,b);
  73.     hieu(a,b);
  74.     tich(a,b);
  75.     thuong(a,b);
  76. }
  77.  
Success #stdin #stdout 0.01s 5496KB
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https://ideone.com/1kdqOR
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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