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The idea is to type I type 3 numbers and calculate the factorial of each number. But I didn’t understand why the variable is keeping the value, for example.
String entra;
int cont = 1;
int numero = 0;
int fatorial = 1;
int contFat =1;
while(cont <= 3){
entra = JOptionPane.showInputDialog("Insira um numero: ");
numero = Integer.parseInt(entra);
cont++;
while(contFat <= numero)
{
fatorial = fatorial + (fatorial*(numero-1));
numero--;
}
System.out.println("resultado da fatorial é: " + fatorial);
}
resultado da fatorial é: 6
resultado da fatorial é: 12
resultado da fatorial é: 12
in the case I typed the numbers in order 3,2,1. The factorial of the second number that should be 2, multiplied by 6 (result of the first factorial).
I suggest you don’t count, so he can learn to make one table test.
– Piovezan
as I mentioned, I understood that the factorial number(2) * (6)= 12. But what I was looking for was the second result inform me the factorial of 2 only and if it was possible to do this with only these variables, because if there were 30 numbers, I would have to declare 30 variables, but thank you
– Cláudio Fernandes
Tell me what’s so special about variables
entraandnumerothat you don’t need to have several of them andfatorialyou think you need to. I repeat, if you simulate the operation of the algorithm manually with a desktop test you will understand.– Piovezan
Perhaps what you are missing is the notion that the declaration of a variable can be separated from the initialization. Example:
int minhaVariavel; minhaVariavel = 2;and that both can be placed in different regions of the code.– Piovezan