A Fibonacci sequence
is defined as follows: the first and second terms in the sequence are 0 and 1. Subsequent terms are found by adding the preceding two terms in the sequence. Write a C program to generate the first n terms of the sequence.
Description:
A fibonacci series is defined as follows:
 The first term in the sequence is 0
 The second term in the sequence is 1
 The sub sequent terms 1 found by adding the preceding two terms in the sequence
 Formula: let t1, t2, ………… tn be terms in fibinacci sequence
 t1 = 0, t2 = 1
 tn = tn  2 + tn  1 …… where n > 2
Algorithm:
Step 1: Start Step 2: Read a, b, sum, lengthOfSeries values as integers Step 3: Set a as 0 and b as 1 Step 4: for counter: 2 to no increment counter by 1 begin sum ← a + b; Print sum a ← b; b ← sum; end Step 5: Stop
Flowchart:
Program:
#include<stdio.h> #include<conio.h> void main() { int a = 0, b = 1, lengthOfSeries = 0, counter, sum = 0; clrscr(); printf("Enter the length of series \n "); scanf("%d", &lengthOfSeries); printf("Fibonacci series\n"); printf("%d %d", a, b); for(counter = 2; counter < lengthOfSeries; counter++) { sum = a + b; printf(" %d",sum); a = b; b = sum; } getch(); }
Input & Output:
Enter the length of series 15 Fibonacci series 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377
Viva Questions:
Q: What is Fibonacci series ?
Ans: A fibonacci series is defined as follows:
 The first term in the sequence is 0
 The second term in the sequence is 1
 The sub sequent terms 1 found by adding the preceding two terms in the sequence
 Formula: let t1, t2, ………… tn be terms in fibinacci sequence
 t1 = 0, t2 = 1
 tn = tn  2 + tn  1 …… where n > 2
Q: What are the various types of unconditional statements?
Ans: goto, break and continue
Q: What are the various types of conditional statements?
Ans: if, if else, switch statements
Q: Expand <STDIO.H >?
Ans: standard input output header file

UpdatedNov 23, 2014

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