Question

Write code in C please.

#1 Write a function multiples() which will take an integer input and it will print out all the multiples of this number starting from 2 but not including itself. For example, multiples(10) will print 2, 5 and multiples(100) will print 2, 4, 5, 10, 20, 25, 50

#2 Write and test a Fibonacci() function that uses a loop instead of recursion to calculate Fibonacci numbers.

Answer 1

Source Code:

Output:

Code in text format (See above images of code for indentation):

/*include library files*/
#include <stdio.h>

/*main function*/
int main(void)
{
   /*function prototypes*/
   void multiples();
   void Fibonacci();
   /*variables*/
   int n,num;
   /*read a number from user*/
   printf("Enter a number to print multiples: ");
   scanf("%d",&n);
   /*function call*/
   printf("The multiples of %d are\n",n);
   multiples(n);
   /*read a number from user*/
   printf("\nEnter number of terms for fibonacci: ");
   scanf("%d",&num);
   /*function call*/
   Fibonacci(num);
   return 0;
}
/*function definition*/
void multiples(int n)
{
   int i;
   /*using loop print multiples*/
   for(i=2;i<n/2;i++)
   {
       /*check and print*/
       if(n%i==0)
           printf("%d, ",i);
   }
   printf("%d",i);
}
/*function definition*/
void Fibonacci(int num)
{
   int i,f=0,s=1,n;
   /*using for loop print fibonacci series*/
   for(i=0;i<num;i++)
   {
       if(i<=1)
           n=i;
       else
       {
           /*swap for next iteration*/
           n=f+s;
           f=s;
           s=n;
       }
       /*print number*/
       printf("%d ",n);
   }
}