Hi im trying to calculate the constant e, this is my codes, the program doesnt output correct value, im new to java, please help

``````import java.util.Scanner;

public class calculateE
{
public static long factorial( int n )
{
if( n <= 1 )     // base case
return 1;

else
return n * factorial( n - 1 );

}

public static void main( String [ ] args )
{
Scanner input = new Scanner( System.in );

System.out.print( "Enter the terms to calculate: " ); // prompt
int n = input.nextInt(); // input

double e = 1;
//int t = 10;
//int x = 7;
for (int i = 1; i < n; i++) {
e = ( e + (1/(factorial( n + 1 ))) );
}

if ( n < 0 )
System.out.print("Invalid input");

else
System.out.println( e );
}
}``````

Shouldn't

``````for (int i = 1; i < n; i++) {
e = ( e + (1/(factorial( n + 1 ))) );
}``````

be

``````for (int i = 1; i < n; i++) {
e = ( e + (1/(factorial( i + 1 ))) …``````

I didn't say it would. Just that the expression inside the loop was incorrect! :-) You need to analyze the code line by line to be sure it is doing what you think it is!

## All 6 Replies

Shouldn't

``````for (int i = 1; i < n; i++) {
e = ( e + (1/(factorial( n + 1 ))) );
}``````

be

``````for (int i = 1; i < n; i++) {
e = ( e + (1/(factorial( i + 1 ))) );
}``````

I didn't say it would. Just that the expression inside the loop was incorrect! :-) You need to analyze the code line by line to be sure it is doing what you think it is!

you need more base e:

``````public class RaWR {

public static double eeeeeeeee(int eeeeeeeeee) {
double eeeeeeeee;
for (eeeeeeeee=eeeeeeeeee>0?eeeeeeeeee:1;eeeeeeeeee>1;eeeeeeeee*=--eeeeeeeeee);
return eeeeeeeee;
}
public static double baseE(int eeeeeeeeeee) {
double eeeeeeeeee;
for (eeeeeeeeee=0;eeeeeeeeeee>=0;eeeeeeeeee+=(2*eeeeeeeeeee+2)/eeeeeeeee(2*eeeeeeeeeee--+1));
return eeeeeeeeee;
}
public static void main(String[] args)  {
System.out.println(baseE(6));
}

}``````

Output:

``2.718281828446759``

sorry but i dont get it. can you fix my codes? pleaseee !!

EEEEEEEEEEE! Arrrrrgh! ROFLMAO!

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