Практикум по программированию. Основы. Ветвление. Корни уравнения
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Revision as of 08:26, 15 March 2016
Contents[hide] |
Java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | import java.util.Scanner;import java.lang.Math;public class Task01 { public static void main(String[] args) { Scanner in = new Scanner(System.in); System.out.println(); System.out.println(" Поиск корней уравнения A * X^2 + B * X + C = 0"); System.out.println("------------------------------------------------"); System.out.print(" Введите A: "); double a = in.nextDouble(); System.out.print(" Введите B: "); double b = in.nextDouble(); System.out.print(" Введите C: "); double c = in.nextDouble(); System.out.println("------------------------------------------------"); double d = b * b - 4 * a * c; double x1, x2; if (d > 0) { x1 = (-b + Math.sqrt(d)) / (2 * a); x2 = (-b - Math.sqrt(d)) / (2 * a); System.out.printf(" X1 = %.3f\n", x1); System.out.printf(" X2 = %.3f\n", x2); } else if (d == 0) { x1 = -b / (2 * a); System.out.printf(" X = %.3f\n", x1); } else { System.out.println(" Уравнение корней не имеет"); } }} |
C++
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | // g++ 4.2#include <iostream>#include <math.h>using namespace std;int main() { double a, b, c; cout << "\n Поиск корней уравнения A * X^2 + B * X + C = 0\n"; cout << "------------------------------------------------\n"; cout << " Введите A: "; cin >> a; cout << " Введите B: "; cin >> b; cout << " Введите C: "; cin >> c; cout << "------------------------------------------------\n"; double d = b * b - 4 * a * c; double x1, x2; if (d > 0) { x1 = (-b + sqrt(d)) / (2 * a); x2 = (-b - sqrt(d)) / (2 * a); printf(" X1 = %.3f\n", x1); printf(" X2 = %.3f\n", x2); } else if (d == 0) { x1 = -b / (2 * a); printf(" X = %.3f\n", x1); } else { cout << " Уравнение корней не имеет\n"; } cout << "\n"; return 0;} |
Pascal
1 |
JavaScript
1 |