-
Notifications
You must be signed in to change notification settings - Fork 0
/
DSA_Fibonacci_upto_10000.cpp
94 lines (81 loc) · 2.25 KB
/
DSA_Fibonacci_upto_10000.cpp
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
// fibonacii series upto 10000
// author: jaydattpatel
#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;
#define MAXDIGIT 5000
inline unsigned short int Q[MAXDIGIT];
ofstream file("Fibonacci-10000.txt");
inline void Add(unsigned short int *n, unsigned short int *p, unsigned short int *c, int &max)
{
if(max == MAXDIGIT-1)
{
cout<<"\n Please increase MAXDIGIT..... !";
exit(2);
}
for(int i = 0; i <(max + 2) ;i++)
Q[i] = 0;
for(int i = 0; i <= max ;i++)
{
n[i] = p[i] + c[i] + Q[i];
if(n[i] > 9 )
{
if(i == max)
max++;
Q[i+1] = n[i] / 10;
n[i] = n[i] % 10;
}
}
return;
}
inline void show(const unsigned short int *x,const int &max)
{
for(int j = max; j>=0 ; j--)
{
cout<<x[j];
file<<x[j];
}
cout<<"\t max: "<<max;
}
inline void fib_long(int n)
{
unsigned short int p[MAXDIGIT], c[MAXDIGIT], nx[MAXDIGIT],
*prev = &p[0], *curr = &c[0], *next = &nx[0], *temp;
for(int j = 0; j <MAXDIGIT ;j++)
next[j] = curr[j] = prev[j] = 0;
prev[0] = 0, curr[0] = 1, next[0] = 0;
int max = 0;
cout<<"\n 0 : "<<prev[0]<<"\n 1 : "<<curr[0];
file<<"\n 0 : "<<prev[0]<<"\n 1 : "<<curr[0];
for(int i =2; i <= n; i++)
{
Add(next,prev,curr,max);
cout<<"\n"<<right<<setw(6)<<i<<" : ";
file<<"\n"<<right<<setw(6)<<i<<" : ";
show(next,max);
for(int j = 0; j <(max+2) ;j++)
prev[j] = 0;
temp = prev;
prev = curr;
curr = next;
next = temp;
}
}
int main()
{
int n = 0;
if(file.is_open()) //if(!file) can also use to check open file error
cout<<"File opened successfully to write\n";
else
{
cout<<"Error to Open File !!!";
exit(1);
}
cout<<"Enter value : ";
cin >> n;
cout<< "\nfib_long: ";
fib_long(n);
file.close();
return 0;
}