Question

algoritm for sum of first 20 even numbers

Answer 1

Answer:

#include<stdio.h>

void main()

{

 int n,sum=0,i;

 scanf("%d",&n);

 for(i=1;i<=n;i++)

 if(i%2==0)

 sum = sum+i;

 printf("%d",sum);

}

Explanation:

Algorithm

1) First Take input n from user if user gives input as 20.

2) Use for loop to check the number from 1 to user number n.

3) % operator will give you the even numbers if remainder is 0.

4)we will store the value of i in variable sum and will add till the for loop doesn't end at 20.

5)print the sum at last.