13) Write a program to calculate and print the first m Fibonacci numbers using Do-While loop.

 

  The numbers in the sequence
1          1          2          3          5          8          13        21        ……………………..
are called Fibonacci numbers. After the first two numbers in the series, each number is the sum of the two preceding numbers.

source file name: Fibnums.C

#include<stdio.h>

int main()
{
int a,b,sum,n,m;

//clrscr();
printf("\n enter m no for Fibonacci series:");
scanf("%d" ,&m);
printf(" \n First %d Fibonacci numbers: ",m);

a=0;
b=1;
n=1;
printf("\n %d ",b);
do
{
sum=a+b;
printf(" %d ",sum);
a=b;
b=sum;
n++;
}while(n<m);
//getch();

return 0;
}

output: