Question 2.21: Write a Java program to compute the sum of the first 100 prime numbers.
Sample Output:
Sum of the first 100 prime numbers: 24133
Solution:
package com.company;
import java.util.Scanner;
public class lab2problem21 {
public static void main(String[] args) {
Scanner Obj = new Scanner(System.in);
int n = Obj.nextInt();
int d = 0;
int sum=0;
for (int i = 2; d < n; i++)
{
int c = 0;
for (int j = 2; j <= i; j++) {
if (i % j == 0) {
c++;
}
}
if(c<2)
{
sum = sum + i;
d++;
}
}
System.out.println("total :" + sum);
}
}
