C Program to Print Fibonacci Series up to N Numbers Using Loops and if statement

1.  
2. //C Program to Print Fibonacci Series upto N Numbers Using For Loop
3. 
   
4. #include <stdio.h>
5. int main() {
6.     int i, n, Number1 = 0, Number2 = 1, next_Number;
7.     printf("Enter the number to print first N Fibonacci Series:- ");
8.     scanf("%d", &n);
9.     printf("Fibonacci Series As Follow :- ");
10. 
    
11.     for (i = 1; i <= n; i++) {
12.         printf("%d, ", Number1);
13.        next_Number = Number1 + Number2;
14.         Number1 = Number2;
15.         Number2 = next_Number;
16.     }
17. 
    
18.     return 0;
19. }

Output

2. //C Program to Print / Display Fibonacci Series up to N Number Using While Loop
3. 
   
4. #include <stdio.h>
5. int main() {
6.     int i=1, n, Number1 = 0, Number2 = 1, next_Number;
7.     printf("Enter the number to print first N Fibonacci Series:- ");
8.     scanf("%d", &n);
9.     printf("Fibonacci Series As Follow :- ");
10. 
    
11.     while (i <= n)
12.  {
13.         printf("%d, ", Number1);
14.        next_Number = Number1 + Number2;
15. 
    
16.         Number1 = Number2;
17.         Number2 = next_Number;
18.          i++;
19.     }
20. 
    
21.     return 0;
22. 
    
23. }

Output

1.  
2. //C Program to Print / Display Fibonacci Series up to N Number Using do-While Loop
3. 
   
4. #include <stdio.h>
5. int main() {
6.     int i=1, n, Number1 = 0, Number2 = 1, next_Number;
7.     printf("Enter the number to print first N Fibonacci Series:- ");
8.     scanf("%d", &n);
9.     printf("Fibonacci Series As Follow :- ");
10. 
    
11.     do
12.  {
13.         printf("%d, ", Number1);
14.        next_Number = Number1 + Number2;
15. 
    
16.         Number1 = Number2;
17.         Number2 = next_Number;
18.          i++;
19.     }while (i <= n);
20. 
    
21.     return 0;
22. }

Output