48 lines
1.6 KiB
Java
48 lines
1.6 KiB
Java
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//--------------- jp.av.dev@gmail.com ---------------//
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/* Switch Case, Scanner, Random, For, While, Do While*/
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package apuntes.pkg;
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import java.util.Random;
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import java.util.Scanner;
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public class SwitchDoWhileFor {
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public static void main(String[] args) {
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int notas[]= new int[20];
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Random r = new Random();
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Scanner s = new Scanner(System.in);
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System.out.println("");
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int opc = 0;
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do{
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System.out.println("0 Salir\n1 Llenar arreglo\n2 Imprimir");
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opc = s.nextInt();
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switch(opc){
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case 0:
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System.out.println("Opcion 0");
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break;
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case 1:
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for (int i = 0; i < 20; i++) {
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int numero = (int) (Math.random() * 70) + 20;
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notas[i] = numero;}
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break;
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case 2:
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for (int i = 0; i < 20; i++) {
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System.out.print(notas[i] + ", ");
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}
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System.out.println("\n");
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break;
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case 3:
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float suma = 0,promedio = 0; //FLOAT asignacion Numero REAL
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for (int i = 0; i < 200; i++) {
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suma = suma + notas[i];
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}
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promedio = suma/20;
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System.out.println("El promedio es " + promedio);
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break;
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}
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}while(opc!=0);
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} //END MAIN
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} //END CLASS
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