Algorithm
-
Input:
Take the number of terms (n
) as input from the user. -
Initialize Variables:
Initialize three variables,first
andsecond
to 0 and 1 respectively (the first two terms of the Fibonacci series), andnext
to 0. -
Display First Two Terms:
- Display the first two terms of the series (
first
andsecond
).
- Display the first two terms of the series (
-
Generate Fibonacci Series:
- Run a loop from 3 to
n
to generate the series. - Inside the loop, calculate the next term (
next
) by adding the previous two terms (first
andsecond
). - Update
first
andsecond
with the current terms. - Display the current term.
- Run a loop from 3 to
-
Display Result:
- After the loop, the program would have displayed the Fibonacci series up to the specified number of terms.
Code Examples
#1 Code Example- C++ Program Fibonacci Series up to n number of terms
Code -
C++ Programming
#include <iostream>
using namespace std;
int main() {
int n, t1 = 0, t2 = 1, nextTerm = 0;
cout << "Enter the number of terms: ";
cin >> n;
cout << "Fibonacci Series: ";
for (int i = 1; i <= n; ++i) {
// Prints the first two terms.
if(i == 1) {
cout << t1 << ", ";
continue;
}
if(i == 2) {
cout << t2 << ", ";
continue;
}
nextTerm = t1 + t2;
t1 = t2;
t2 = nextTerm;
cout << nextTerm << ", ";
}
return 0;
}
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Output
Enter the number of terms: 10
Fibonacci Series: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34
Fibonacci Series: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34
#2 Code Example- C++ Programing Program to Generate Fibonacci Sequence Up to a Certain Number
Code -
C++ Programming
#include <iostream>
using namespace std;
int main() {
int t1 = 0, t2 = 1, nextTerm = 0, n;
cout << "Enter a positive number: ";
cin >> n;
// displays the first two terms which is always 0 and 1
cout << "Fibonacci Series: " << t1 << ", " << t2 << ", ";
nextTerm = t1 + t2;
while(nextTerm <= n) {
cout << nextTerm << ", ";
t1 = t2;
t2 = nextTerm;
nextTerm = t1 + t2;
}
return 0;
}
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Output
Enter a positive integer: 100
Fibonacci Series: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89,
Fibonacci Series: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89,
Demonstration
C++ Programing Example to Display Fibonacci Series-DevsEnv