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Thread: Please help me with functions

  1. #1
    Junior Member
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    Default Please help me with functions

    Create a function that calculates the sum of the first 100 natural numbers.
    Create a MaxInt class that allows you to read the largest unique integer between 5 numbers
    Create a function that accepts N ratings (between 0 and 20) and displays the class average
    Create a funciton that reads an integer N and prints all the odd numbers less than N
    Write a prgram that presents the user with a vertical menu with options (USE VARIOUS MENUS)
    1. Insert, 2. Remove, 3. Consult 4. Save and 5 Exit
    Then the program should read an int, which will only be valid if it is between 1 and 5 and present to the user, verbatim the chosen option or the message "Option invalid"
    When choosing an option 5 exit

    Thats code only use functions

    --- Update ---

    package com.company;

    import java.util.Scanner;

    public class Main {


    public static void main(String[] args) {

    // o que eu quero pegar x
    // adicionar o que vem a seguir
    // e resultado final durante x vezes
    /* int soma=0;

    for (int i=0; i<=100; i++)
    soma = i + soma;
    System.out.println(soma);
    /*
    -----------------------------------------------------------------

    Scanner sc = new Scanner (System.in);
    int valor[] = new int[4];
    int maior = 0, menor = 0;

    for(int i = 0; i < valor.length; i++){
    System.out.print("Digite o " +(i+1)+"º valor: ");
    valor[i] = sc.nextInt();
    if(valor[i] > maior){
    maior = valor[i];
    }
    }
    for (int j = 0; j < valor.length; j++) {
    if(valor[j] < menor){
    menor = valor[j];
    }
    }
    System.out.println("Maior valor = "+ maior);
    System.out.println("Menor valor = "+ menor);
    }
    }
    ------------------------------------------------------------------------------------------

    Scanner ent = new Scanner(System.in);
    int nota1, nota2, nota3, nota4, nota5;
    int media, i, medAluno = 0;

    for (i = 0; i <= 20; i++) {

    medAluno++;
    // recebe a 1º nota
    System.out.println("Aluno 1, digite a 1ª nota");
    nota1 = ent.nextInt();

    // recebe a 2º nota
    System.out.println("Aluno 2, digite a 2ª nota");
    nota2 = ent.nextInt();

    // recebe a 3º nota
    System.out.println("Aluno 3, digite a 3ª nota");
    nota3 = ent.nextInt();

    // recebe a 3º nota
    System.out.println("Aluno 4, digite a 4ª nota");
    nota4 = ent.nextInt();

    System.out.println("Aluno 5, digite a 5ª nota");
    nota5 = ent.nextInt();


    // calcula a média
    media = (nota1 + nota2 + nota3 + nota4 + nota5) / 5;
    System.out.println("A média da turma é de: " + media);
    }
    }
    }


    */

    //-----------------------------------------------------------------------------------------------------//
    /*
    // declaração de vetor
    int[] vetor = new int[10];

    // declaração de variáveis
    int i = 0, slot = 0;

    do{
    // validação números ímpares
    if(i % 2 == 1){
    vetor[slot] = i;
    slot++;
    }
    i++;
    }while(slot < 10);

    // zerando o valor de i
    i = 0;

    // imprimindo os números ímpares
    for(; i < vetor.length; i++){
    System.out.println(vetor[i]);
    }

    -------------------------------------------------------------------------------------

    int opcao;
    String nome;
    int i = 0;

    Scanner op = new Scanner(System.in);
    Scanner nm = new Scanner(System.in);

    System.out.println("Menu");
    nome = nm.nextLine();

    do{

    System.out.println("1-Inserir;");
    System.out.println("2-Remover;");
    System.out.println("3-Consultar;");
    System.out.println("4-Gravar");
    System.out.println("5-Sair");
    opcao = op.nextInt();

    switch(opcao){

    case 0:
    System.out.println("Ok, ate mais ...");
    break;

    case 1:
    for(int c = 0;c<1;c++){
    System.out.println(nome);
    }
    break;

    case 2:
    while(i<2){
    System.out.println(nome);
    i++;
    }
    break;
    case 3:

    do{
    System.out.println(nome);
    i++;
    }while(i<3);
    break;

    case 4:

    do{
    System.out.println(nome);
    i++;
    }while(i<2);
    break;

    case 5:

    do{
    System.out.println(nome);
    i++;
    }while(i<5);
    break;
    }
    }while(opcao != 5);

    System.out.println("Programa encerrado.");
    }

    */
    }
    }



    exercícios while-if-case
    package com.company;

    import java.util.Scanner;

    public class Main {

    public static void main (String[] args) {
    /*
    int numero = 20;

    if(numero>0){
    System.out.println ("O número é superior a 0");
    System.out.println ("Metade é "+ numero/2);
    }
    else if{
    System.out.println ("O número é superior a 0");
    System.out.println ("Metade é "+ numero/2);

    else
    System.out.println ("Falso");

    }
    if(numero +5 ==25)
    System.out.println ("Verdadeiro 25");
    else
    System.out.println ("Falso");
    --------------------------------------------------------------------
    int hora = 19;

    if (hora <20)
    System.out.println ("Bom dia");
    else
    System.out.println ("Boa Noite");

    String resultado = (hora <20) ? "Bom Dia" : "Boa Noite";
    System.out.println (resultado);

    ------------------------------------------------------------------------

    int peso = 50;
    switch (peso){
    case 40: System.out.println ("Magro"); break;
    case 70: System.out.println ("Certo"); break;
    case 90: System.out.println ("As meninas da turma"); break;
    case 150: System.out.println ("José, Ladeira e Vicente"); break;
    default: System.out.println("Prof");
    }

    --------------------------------------------------------------------------------

    int i =5;
    while (i<5) {
    System.out.println("While");
    System.out.println(i);
    i++;
    } //end While

    i=5;
    do {
    System.out.println("Do While");
    System.out.println(i);
    i++;
    } while (i<5); // end Do While
    -----------------------------------------------------------------
    for (int i =0; i<50; i++) {
    System.out.println(i);
    if(i==20) break;
    }
    */

    }


    }

  2. #2
    Super Moderator Norm's Avatar
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    Eastern Florida
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    Default Re: Please help me with functions

    Do you have any specific java programming questions?
    Note: java uses methods not functions. Are you sure you are writing this in the correct language. C++ uses functions.

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    See: http://www.java-forums.org/misc.php?do=bbcode#code
    If you don't understand my answer, don't ignore it, ask a question.

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