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August 31, 2024 14:47
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Estruturas de repetição em Java: while, do-while e for
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| package org.example; | |
| import java.util.Scanner; | |
| public class Exercicio { | |
| /*Faça um programa que receba um número e, | |
| usando laços de repetição, | |
| calcule e mostre a tabuada desse número. */ | |
| public static void main(String[] args) { | |
| Scanner scanner = new Scanner(System.in); | |
| int number; | |
| System.out.println("\nOlá! Insira o número para calcular a tabuada."); | |
| number = scanner.nextInt(); | |
| for (int i = 0; i <= 10; i++) | |
| System.out.printf("\n\n%d x %d = %d", number, i, (number * i)); | |
| scanner.close(); | |
| } | |
| } |
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| package org.example; | |
| public class For { | |
| public static void main(String[] args) { | |
| // Todos os parâmetros do for são opcionais | |
| // Este for percorre de 0 a 10 | |
| for (int i = 0; i <= 5 ; i++) { | |
| // Se for par, execute este bloco de código | |
| if (i % 2 == 0) { | |
| System.out.println("Entrou no if, portanto é par"); | |
| // Bloco de código do if | |
| // A variável "i" ainda é válida aqui pois está dentro do escopo do primeiro for | |
| for (int j = -1; j < 2; j++) { | |
| System.out.println("Início do for menor"); | |
| System.out.println("Valor do i: " + i); | |
| System.out.println("Valor do j: " + j); | |
| if (j >= 0) break; | |
| } | |
| } | |
| } | |
| } | |
| } |
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| package org.example; | |
| public class While { | |
| public static void main(String[] args) { | |
| int number = 10; | |
| do { | |
| number++; | |
| System.out.println("Valor do número dentro do DO: " + number); | |
| } while (number < 10); | |
| number = 10; | |
| while (number < 10) { | |
| number++; | |
| if (number % 2 != 0) continue; | |
| System.out.printf("\nValor do número dentro do WHILE: %d", number); | |
| } | |
| } | |
| } |
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