1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
#include <iostream>
#include <string>
using namespace std;
class Node
{
public:
int value;
Node * next;
Node();
Node(int);
};
Node::Node():value(0),next(NULL){}
Node::Node(int v):value(v),next(NULL){}
void Print(Node * h)
{
if(!h) return;
Print(h->next);
cout<<h->value;
}
void AddHead(Node* & head, int n)
{
Node * tmp = new Node(n);
tmp->next = head;
head=tmp;
}
void Addition( Node* h1,Node* h2)
{
int carry = 0, sum;
Node* result = NULL;
Node* tmp = NULL;
Node* prev = NULL;
while(h1 !=NULL || h2 != NULL)
{
sum = carry +((h1? h1->value: 0) +(h2? h2->value: 0));
carry = (sum >=10)? 1:0;
sum = sum % 10;
tmp = new Node(sum);
if(result== NULL){
result = tmp;}
else{
prev->next = tmp;}
prev = tmp;
if(h1) h1=h1->next;
if(h2) h2=h2->next;
}
if(carry > 0)
tmp->next = new Node(carry);
Print(result);
}
void Subtraction( Node* h1,Node* h2)
{
int carry = 0, sum;
Node* result = NULL;
Node* tmp = NULL;
Node* prev = NULL;
while(h1 !=NULL || h2 != NULL)
{
sum = carry + ((h2? h2->value: 0) - (h1? h1->value: 0));
carry = (sum < 0)? -1:0;
if(carry < 0) sum += 10;
/*sum = sum % 10;*/
tmp = new Node(sum);
if(result== NULL){
result = tmp;}
else{
prev->next = tmp;}
prev = tmp;
if(h1) h1=h1->next;
if(h2) h2=h2->next;
}
//if(carry < 0)
/*tmp->next = new Node(carry);*/
Print(result);
}
int Length(Node* head)
{
int i=0;
while(head)
{
i++;
head=head->next;
}
return i;
}
int main()
{
string num1,num2;
char operation, ans;
int v;
do
{
Node* h1 = NULL;
Node* h2 = NULL;
cout<<"Enter first number: ";
cin >> num1;
for(unsigned int i=0; i<num1.length(); i++)
{
v= num1[i] - '0';
AddHead(h1,v);
}
Print(h1);
cout<<endl;
cout<<"Enter second number: ";
cin>> num2;
for(unsigned int i=0; i<num2.length(); i++)
{
v= num2[i] - '0';
AddHead(h2,v);
}
Print(h2);
cout<<endl;
cout<<"Do you want to add or substract the numbers enter + or -: ";
cin>>operation;
if(operation == '+')
{
cout<<"Result: ";
Addition(h1,h2);
cout<<endl;
}
else if(operation == '-')
{
cout<<"Result: ";
if(h2 > h1)
{cout<<"-"; Subtraction(h2, h1);}//this is where i switch the numbers
else if(h1 > h2)
{Subtraction(h1,h2);}
cout<<endl;
}
cout<<"Again :";
cin>> ans;
}
while((ans == 'Y') || (ans == 'y'));
return 0;
}
| |
