Write a c program to generate fibonacci series without recursion

• Fibonacci series starts from 0 ,1 and the next number should be sum of previous two numbers.
• 0+1=1, so the next number in Fibonacci series in c program is 1. 0 1 1 
• 0 1 1 2 3 5 8.. and so on.
• Now let us see and c language example program on fibonacci series.

Fibonacci series in C language: 

• First print 0, 1 by default.
• and start from 2 and iterate upto n-1 using for loop.
• inside loop assign n3=n1+n2;  
• and ptint sum. printf(" %d",n3);  
• Assign n2 value to n1. n1=n2
• Assign sum to n2:  variable n2=n3;  

Program #1 : write a C program to print / generate fibonacci series up to n numbers.  Take input from user without recursion

1. #include <stdio.h>
2. #include <stdlib.h>
3.  
4. int main()  
5. {   
6. int n1=0,n2=1,n3,i,number;   
7. printf("Enter the number of elements to be printed in Fibonacci series:");   
8. scanf("%d",&number);   
9. printf("\n%d %d",n1,n2);//printing 0 and 1  
10.    
11. for(i=2;i<number;++i)//Starts from 2 to given number-1
12. {  
13.   n3=n1+n2;  
14.   printf(" %d",n3);  
15.   n1=n2;  
16.   n2=n3;   
17. }  
18. getch();  
19. } 

  
Output: