c program for fibonacci series

1#include<stdio.h>
2
3void fibonacciSeries (int range);
4
5void main()
6{
7   int range;
8
9   printf("Enter range: ");
10   scanf("%d", &range);
11
12   printf("\nThe Fibonacci series is: \n");
13
14   fibonacciSeries(range);
15
16}
17
18void fibonacciSeries(int range)
19{
20   int a=0, b=1, temp;
21
22   while (a<=range)
23   {
24     printf("%d\t", a);
25     temp = a+b;
26     a = b;
27     b = temp;
28   }
29
30}
31

1int main()    
2{    
3 int n1=0,n2=1,n3,i,number;    
4 printf("Enter the number of elements:");    
5 scanf("%d",&number);    
6 printf("\n%d %d",n1,n2);//printing 0 and 1    
7 for(i=2;i<number;++i)//loop starts from 2 because 0 and 1 are already printed    
8 {    
9  n3=n1+n2;    
10  printf(" %d",n3);    
11  n1=n2;    
12  n2=n3;    
13 }  
14  return 0;  
15 }    

1#include <stdio.h>
2int main() {
3    int i, n, t1 = 0, t2 = 1, nextTerm;
4    printf("Enter the number of terms: ");
5    scanf("%d", &n);
6    printf("Fibonacci Series: ");
7
8    for (i = 1; i <= n; ++i) {
9        printf("%d, ", t1);
10        nextTerm = t1 + t2;
11        t1 = t2;
12        t2 = nextTerm;
13    }
14
15    return 0;
16}
17

1#include <stdio.h>
2int main() {
3    int t1 = 0, t2 = 1, nextTerm = 0, n;
4    printf("Enter a positive number: ");
5    scanf("%d", &n);
6
7    // displays the first two terms which is always 0 and 1
8    printf("Fibonacci Series: %d, %d, ", t1, t2);
9    nextTerm = t1 + t2;
10
11    while (nextTerm <= n) {
12        printf("%d, ", nextTerm);
13        t1 = t2;
14        t2 = nextTerm;
15        nextTerm = t1 + t2;
16    }
17
18    return 0;
19}
20

1//Program Name: Print fibonacci series using for loop upto n term
2// for e.g 1, 1, 2, 3, 5, 8
3#include <stdio.h>
4void main()
5{
6    int s1=0,s2=1; //initializing first two numbers 
7    int nextNum=0,SumUpto=0;
8    printf("\n\n\tPlease enter number up to which print Fibonacci series is required \t");
9    scanf("%d",&SumUpto);
10    //printing first two numbers
11    printf("\n\tfibbonacci Series up to %d is ",SumUpto);
12    printf("\n\n\t%d  %d",s1,s2);
13     for(nextNum=2;nextNum<=SumUpto;)
14    {    
15 	        s1=s2;    
16        s2=nextNum; 
17        printf(" %d",nextNum); 
18        nextNum=s1+s2;
19    }  
20}

1#include <stdio.h>
2void main()
3{
4    int s1=0,s2=1; //initializing first two numbers 
5    int nextNum=0,SumUpto=0;
6
7    printf("\n\n\tPlease enter number up to which print Fibonacci series is required \t");
8    scanf("%d",&SumUpto);
9    printf("\n\tfibbonacci Series up to %d is ",SumUpto);
10    printf("\n\n\t%d  %d",s1,s2);
11     for(nextNum=2;nextNum<=SumUpto;)
12    {    
13        s1=s2;    
14        s2=nextNum; 
15        printf(" %d",nextNum); 
16        nextNum=s1+s2;
17    }  
18}