Question

Write a C program that accepts a single integer N. Your code must then calculate the average of all positive integers less than N that are divisible by either 5 or 7, but not both.

When you print your average, truncate the result to three decimal places. Do not print anything else to the screen.

Example input:

19

Example output:

10.200

Answer 1

Code For Above Problem:

 #include <stdio.h> int main() {         int n;//Single Integer  scanf("%d",&n);//reading integer    float sum=0;//to hold the sum   float average;//to hold the average     int count=0;//to count how many numbers that are divisible by either 5 or 7             for(int i=1;i<=n;i++)//Check for all Numbers         {               if(i%5==0 || i%7==0)//check number divisible by either 5 or 7           {                       if(!(i%5==0 && i%7==0))//check if it should not divisible by 5 and 7                    {                               sum+=i;//add number to sum                              count++;//increment the count                   }               }       }       average=sum/count;//finding average     printf("%.3f\n",average);//printing average upto 3 decimals     return 0; }

Input/Output Of Above Code:

Sample Input:

10

Sample Output:

10.200

Image Of Above Code:

1#include <stdio.h> 2 int main() 3{ 4 int n;//Single Integer 5 scanf("%d",&n);//reading integer 6 float sum=0;//to hold the sum 7 float average;//to hold the average 8 int count=0;//to count how many numbers that are divisible by either 5 or 7 9 10 for(int i=1;i<=n; i++)//Check for all Numbers 11 12 if(i%5==0 || i%7==0)//check number divisible by either 5 or 7 13 { 14 if(!(i%5==0 && i%7==0))//check if it should not divisible by 5 and 7 15 16 sum+=1;//add number to sum 17 count++;//increment the count 18 19 20 21 average=sum/count;//finding average 22 printf("%.3f\n", average);//printing average upto 3 decimals 23 return 0; 24} { }

Input/Output Image:

apiiit-rkv@apiiitrkv-Travelmate-P243-M:-/Desktops cc sample.c apiiit-rkvapiiitrkv-TravelMate-P243-M:~/Desktop$ ./a.out 19 10.200