C++ Program to Find Fibonacci Numbers using Dynamic Programming

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This C++ Program demonstrates the the computation of Fibonacci Numbers using Dynamic Programming.

Here is source code of the C++ Program to Find Fibonacci Numbers using Dynamic Programming. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

  1. /* 
  2.  * C++ Program to Find Fibonacci Numbers using Dynamic Programming
  3.  */
  4. #include <cstring>
  5. #include <iostream>
  6. #include <cstdlib>
  7. #define ll long long
  8. using namespace std;
  9.  
  10. ll fib[1000] = {0};
  11. /* 
  12.  * Fibonacci Numbers using Dp
  13.  */
  14. ll fibo_dp(int n)
  15. {
  16.     fib[1] = 1;
  17.     fib[2] = 1;
  18.     if (fib[n] == 0)
  19.     {
  20.         for (int j = 3; j <= n; ++j)
  21.         {
  22.             if (fib[n] == 0)
  23.                 fib[j] = fib[j - 1] + fib[j - 2];
  24.             else
  25.                 continue;
  26.         }
  27.     }
  28.     return fib[n];
  29. }
  30.  
  31. /* 
  32.  * Main
  33.  */
  34. int main()
  35. {
  36.     int n;
  37.     while (1)
  38.     {
  39.         cout<<"Enter the integer n to find nth fibonnaci no.(0 to exit): ";
  40.         cin>>n;
  41.         if (n == 0)
  42.             break;
  43.         cout<<fibo_dp(n)<<endl;
  44.     }
  45.     return 0;
  46. }

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$ g++ fibo_dp.cpp
$ a.out
 
Enter the integer n to find nth fibonnaci no.(0 to exit): 10
55
Enter the integer n to find nth fibonnaci no.(0 to exit): 9
34
Enter the integer n to find nth fibonnaci no.(0 to exit): 8
21
Enter the integer n to find nth fibonnaci no.(0 to exit): 7
13
Enter the integer n to find nth fibonnaci no.(0 to exit): 6
8
Enter the integer n to find nth fibonnaci no.(0 to exit): 5
5
Enter the integer n to find nth fibonnaci no.(0 to exit): 4
3
Enter the integer n to find nth fibonnaci no.(0 to exit): 3
2
Enter the integer n to find nth fibonnaci no.(0 to exit): 2
1
Enter the integer n to find nth fibonnaci no.(0 to exit): 0
 
------------------
(program exited with code: 1)
Press return to continue

Sanfoundry Global Education & Learning Series – 1000 C++ Programs.

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If you wish to look at all C++ Programming examples, go to C++ Programs.

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn