Практикум по программированию. Основы. Циклы. Поиск элементов ряда
From AsIsWiki
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==Java== | ==Java== | ||
− | < | + | <source lang="java"> |
import java.util.Scanner; | import java.util.Scanner; | ||
Line 14: | Line 14: | ||
public static void main(String[] args) { | public static void main(String[] args) { | ||
− | + | ||
Scanner in = new Scanner(System.in); | Scanner in = new Scanner(System.in); | ||
− | + | ||
− | + | System.out.println(); | |
System.out.println(" Поиск элементов ряда:"); | System.out.println(" Поиск элементов ряда:"); | ||
System.out.println(" 1, 1 + 1/2, 1 + 1/2 + 1/3 ..."); | System.out.println(" 1, 1 + 1/2, 1 + 1/2 + 1/3 ..."); | ||
System.out.println("-------------------------------"); | System.out.println("-------------------------------"); | ||
− | System.out.print(" Введите границу поиска: "); | + | System.out.print(" Введите границу поиска: "); |
− | + | double x = in.nextDouble(); | |
− | + | double y = 0; | |
− | + | int i = 0; | |
− | + | ||
− | + | ||
− | + | while (y <= x) { | |
− | + | y += 1.0 / ++i; | |
− | + | } | |
− | + | System.out.println("-------------------------------"); | |
+ | System.out.printf(" Y = %.12f\n", y); | ||
} | } | ||
} | } | ||
− | </ | + | </source> |
==C++== | ==C++== | ||
− | < | + | <source lang="cpp"> |
// g++ 4.2 | // g++ 4.2 | ||
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cout << " Введите границу поиска: "; | cout << " Введите границу поиска: "; | ||
cin >> x; | cin >> x; | ||
− | |||
− | |||
double y = 0; | double y = 0; | ||
Line 69: | Line 66: | ||
} | } | ||
+ | cout << "-------------------------------\n"; | ||
printf(" Y = %.12f\n\n", y); | printf(" Y = %.12f\n\n", y); | ||
return 0; | return 0; | ||
} | } | ||
− | </ | + | </source> |
+ | |||
+ | |||
+ | ==Python== | ||
+ | |||
+ | <source lang="cpp"> | ||
+ | # Python 3 | ||
+ | |||
+ | print('\n Поиск элементов ряда:') | ||
+ | print(' 1, 1 + 1/2, 1 + 1/2 + 1/3 ...') | ||
+ | print('-------------------------------') | ||
+ | |||
+ | x = float(input(' Введите границу поиска: ')) | ||
+ | |||
+ | y = 0; i = 1 | ||
+ | while y <= x: | ||
+ | y += 1 / i | ||
+ | i += 1 | ||
+ | |||
+ | print('-------------------------------') | ||
+ | print(' Y = %.12f' % y) | ||
+ | </source> | ||
==Pascal== | ==Pascal== | ||
− | < | + | <source lang="delphi"> |
− | </ | + | </source> |
+ | |||
+ | |||
+ | ==JavaScript== | ||
+ | |||
+ | <source lang="js"> | ||
+ | <html lang="ru"> | ||
+ | <head> | ||
+ | <meta charset="UTF-8"> | ||
+ | <script> | ||
+ | function calc() { | ||
+ | var x = document.getElementById("xId").value; | ||
+ | |||
+ | var y = 0, i = 0; | ||
+ | |||
+ | while (y <= x) { | ||
+ | y += 1 / ++i; | ||
+ | } | ||
+ | |||
+ | document.getElementById("resultId").innerHTML = "Y = " + y.toFixed(12); | ||
+ | } | ||
+ | </script> | ||
+ | </head> | ||
+ | <body> | ||
+ | |||
+ | <p>Поиск элементов ряда: 1, 1 + 1/2, 1 + 1/2 + 1/3 ...</p> | ||
+ | <hr> | ||
+ | <p>Введите границу поиска: <input id="xId" size="5"></p> | ||
+ | <hr> | ||
+ | <p id="resultId"></p> | ||
+ | |||
+ | <button onclick="calc()">Рассчитать</button> | ||
+ | |||
+ | </body> | ||
+ | </html> | ||
+ | </source> | ||
Latest revision as of 08:46, 21 November 2017
Contents |
[edit] Java
import java.util.Scanner; public class Task03 { public static void main(String[] args) { Scanner in = new Scanner(System.in); System.out.println(); System.out.println(" Поиск элементов ряда:"); System.out.println(" 1, 1 + 1/2, 1 + 1/2 + 1/3 ..."); System.out.println("-------------------------------"); System.out.print(" Введите границу поиска: "); double x = in.nextDouble(); double y = 0; int i = 0; while (y <= x) { y += 1.0 / ++i; } System.out.println("-------------------------------"); System.out.printf(" Y = %.12f\n", y); } }
[edit] C++
// g++ 4.2 #include <iostream> using namespace std; int main() { double x; cout << "\n Поиск элементов ряда:\n"; cout << " 1, 1 + 1/2, 1 + 1/2 + 1/3 ...\n"; cout << "-------------------------------\n"; cout << " Введите границу поиска: "; cin >> x; double y = 0; int i = 0; while (y <= x) { y += 1.0 / ++i; } cout << "-------------------------------\n"; printf(" Y = %.12f\n\n", y); return 0; }
[edit] Python
# Python 3 print('\n Поиск элементов ряда:') print(' 1, 1 + 1/2, 1 + 1/2 + 1/3 ...') print('-------------------------------') x = float(input(' Введите границу поиска: ')) y = 0; i = 1 while y <= x: y += 1 / i i += 1 print('-------------------------------') print(' Y = %.12f' % y)
[edit] Pascal
[edit] JavaScript
<html lang="ru"> <head> <meta charset="UTF-8"> <script> function calc() { var x = document.getElementById("xId").value; var y = 0, i = 0; while (y <= x) { y += 1 / ++i; } document.getElementById("resultId").innerHTML = "Y = " + y.toFixed(12); } </script> </head> <body> <p>Поиск элементов ряда: 1, 1 + 1/2, 1 + 1/2 + 1/3 ...</p> <hr> <p>Введите границу поиска: <input id="xId" size="5"></p> <hr> <p id="resultId"></p> <button onclick="calc()">Рассчитать</button> </body> </html>