WAP to take 20 integers elements in an array and find the sum of the prime elements
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Answer:
import java.util.*;
class Sum{
public static void main(String args[]){
Scanner sc=new Scanner(System.in);
int arr[]=new int[20];
int c=0,i,j,sum=0;
System.out.println("enter the 20 integers");
for(i=0;i<20;i++){
arr[i]=sc.nextInt();
} // end of loop
for(j=1;j<=arr[i];j++){
if(j%arr[i]==0){
c++;
} //end of if
if(c==2){
sum=sum+arr[i];
} // end of if
} //end of for loop
System.out.println(sum);
} //end of main
} //end of class
Explanation:
c==2 is taken for the prime number condition
c is taken for counting the factors of arr[i]
hope this will help you
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