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  1. #include<iostream>
  2. #include<stdio.h>
  3. using namespace std;
  4.  
  5. class rational
  6. {
  7. 	int n,d;
  8. public:
  9. 	rational() : n(1), d(1) {};
  10. 	~rational(){};
  11.  
  12. 	void getData()
  13. 	{
  14. 		cout<<"\nEnter a numerator: ";
  15. 		cin>>n;
  16. 		cout<<"Enter a denominator: ";
  17. 		cin>>d;
  18. 		cout<<endl;
  19.  
  20. 		while(d==0)
  21. 		{
  22. 			cout<<"Please enter a denominator: ";
  23. 			cin>>d;
  24. 		}
  25.  
  26. 		while(d<0)
  27. 		{
  28. 			n *= -1;
  29. 			d *= -1;
  30. 		}
  31. 	}
  32.  
  33. int GCD(int n1, int remainder)
  34. {
  35. 	if(remainder==0)
  36. 		return(n1);
  37. 	else { return(GCD(remainder,n1%remainder)); }
  38. }
  39.  
  40. void reduce(int &n,int &d)
  41. {
  42. 	int rdc = 0;
  43. 	if(d>n)
  44. 		rdc = GCD(d,n);
  45. 	else if(d<n)
  46. 		rdc = GCD(n,d);
  47. 	else
  48. 		rdc = GCD(n,d);
  49. 	n /= rdc;
  50. 	d /= rdc;
  51. 	cout<<n<<"/"<<d<<endl;
  52. }
  53.  
  54. void operator +(rational c1)
  55. {
  56. rational temp;
  57. temp.n=(n*c1.d)+(c1.n*d);
  58. temp.d=c1.d*d;
  59. reduce(temp.n,temp.d);
  60. }
  61.  
  62. void operator -(rational c1)
  63. {
  64. rational temp;
  65. temp.n=(n*c1.d)-(c1.n*c1.d);
  66. temp.d=c1.d*d;
  67. reduce(temp.n,temp.d);
  68. }
  69.  
  70. void operator *(rational c1)
  71. {
  72. rational temp;
  73. temp.n=n*c1.n;
  74. temp.d=d*c1.d;
  75. reduce(temp.n,temp.d);
  76. }
  77.  
  78. };
  79.  
  80. int main()
  81. {
  82. 	rational c1, c2;
  83. 	int n,x;
  84. 	char cr;
  85. 	cin>>x;
  86. 	for(int contador=0; contador<x; contador++){
  87. 			if(contador<x){
  88. 							c1.getData();
  89. 							c2.getData ();
  90. 					}
  91. 			}
  92. 	cin>>cr;
  93. 	switch(cr)
  94. 	{
  95. 		case '+':
  96. 			c1+c2;
  97. 			cin.get();
  98. 		return 0;
  99. 		case '-':
  100. 			c1-c2;
  101. 			cin.get();
  102. 		return 0;
  103. 		case '*':
  104. 			c1*c2;
  105. 			cin.get();
  106. 		return 0;
  107. 		default:
  108. 			cout<<endl;
  109. 		return 0;
  110. 	}
  111.  
  112. cin.get();
  113. return 0;
  114. }
  115.  
Success #stdin #stdout 0s 4276KB
comments (?)
stdin 
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stdout 
Enter a numerator: Enter a denominator: 

Enter a numerator: Enter a denominator: 
4/1
https://ideone.com/19lwkS
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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