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SumOfNaturalNumber.java

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// Sum of first n natural number

import java.util.*;

public class SumOfNaturalNumber {

public static void main(String args[]){

Scanner sc = new Scanner(System.in);

int n = sc.nextInt();

int sum = 0;

for(int i = 1; i <= n; i++){

sum = sum + i;

}

System.out.println(sum);

}

}