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package loop;
import java.util.Scanner;
public class DoWhile_loop1 {
public static void main(String[] args) {
double sum;
int n,i;
String op,st;
Scanner objin = new Scanner(System.in);
do{
System.out.println("A. Sum Loop 1");
System.out.println("B. Sum Loop 2");
System.out.println("C. Sum Loop 3");
System.out.println("D. Sum Loop 4");
System.out.println("E. Sum Loop 5");
System.out.println("F. Sum Loop 6");
System.out.print("Choose One (A->F) :");
op=objin.next();
System.out.print("Input Number Of Loop :");
n=objin.nextInt();
switch(op){
case "a", "A" -> {
sum=0.0;
for(i=1;i<n;i++){
sum = sum +i;
}
System.out.println("Sum of Loop1 :"+sum);
}
case "b", "B" -> {
sum=0.0;
for(i=1;i<n;i++){
sum = sum + Math.sqrt(i);
}
System.out.println("Sum of Loop2 :"+sum);
}
case "c", "C" -> {
sum=0.0;
for(i=1;i<n;i++){
sum = sum + Math.pow(i, 3);
}
System.out.println("Sum of Loop3 :"+sum);
}
case "d", "D" -> {
sum=0.0;
for(i=1;i<n;i++){
sum = sum + Math.sin(i);
}
System.out.println("Sum of Loop4 :"+sum);
}
case "f", "F" -> {
sum=0.0;
for(i=1;i<n;i++){
sum = sum + Math.log(i);
}
System.out.println("Sum of Loop5 :"+sum);
}
}
System.out.println("Press Yes to Continue ..! or Press No Exit ..!");
st=objin.next();
}while(st.equals("Yes"));
}
}