C Exercises: Print the first 20 numbers of the Pell series

C Numbers: Exercise-35 with Solution

Write a program in C to print the first 20 numbers of the Pell series.

Sample Solution:

C Code:

# include <stdio.h>
# include <stdlib.h>


int main()
{
	int n,a=1,b=0,c;
	printf("\n\n Find the first 20 numbers of the Pell series: \n");
	printf(" --------------------------------------------------\n");	
    printf(" The first 20 numbers of Pell series are: \n");
    c=0;
    printf(" %d ",c);
    for(n=1; n<20; n++)
     {
      c= a + 2*b;
      printf("%d ",c);
      a = b;
      b = c;
     }
	 printf("\n");
}

Sample Output:

The first 20 numbers of Pell series are:                                                                     
 0 1 2 5 12 29 70 169 408 985 2378 5741 13860 33461 80782 195025 470832 1136689 2744210 6625109 

Pictorial Presentation:

Flowchart:

C Programming Code Editor:

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