Lab 2-2: 正實數加法 (30%)

  • 輸入：兩正實數的整數部分、正實數的小數部分（輸入數字乘以\( \frac{1}{1,000,000} \)），正實數的小數部分不超過 6 位數。
  • 輸出：兩正實數數值、兩正實數的和，並且以 double 形式搭配 std::fixed 輸出。
  • 檔名：lab2_2_<學號>.cpp (e.g. lab2_2_106062802.cpp)

程式需提示使用者輸入兩正實數的整數部分、正實數的小數部分，程式需輸出兩正實數數值、兩正實數的和。

Format

Input real number (a), before decimal point: <(a) before decimal point>⏎
Input real number (a), after decimal point: <(a) after decimal point>⏎
The real number (a) is: <real number (a)>
Input real number (b), before decimal point: <(b) before decimal point>⏎
Input real number (b), after decimal point: <(b) after decimal point>⏎
The real number (b) is: <real number (b)>
(a) + (b) = <real number (a) + (b)>

Example

$ ./a.out
Input real number (a), before decimal point: 1⏎
Input real number (a), after decimal point: 234560⏎
The real number (a) is: 1.234560
Input real number (b), before decimal point: 12345⏎
Input real number (b), after decimal point: 6⏎
The real number (b) is: 12345.000006
(a) + (b) = 12346.234566

Reference Code:

Credit: 金昆樂 (110021111)

#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
    double a1, a2, b1, b2;
    cout << "Input real number (a), before decimal point: ";
    cin >> a1;
    cout << "Input real number (a), after decimal point: ";
    cin >> a2;
    cout << "The real number (a) is: " << fixed << a1 + a2 / 1000000 << endl;
    cout << "Input real number (b), before decimal point: ";
    cin >> b1;
    cout << "Input real number (b), after decimal point: ";
    cin >> b2;
    cout << "The real number (b) is: " << fixed << b1 + b2 / 1000000 << endl;
    cout << "(a) + (b) = " << fixed << a1 + b1 + (a2 + b2) / 1000000 << endl;
    return 0;
}