技術標籤：東北大學秦皇島分校通訊工程中外合作2020級C語言實驗課

1.閱讀下面的程式，在電腦中錄入、執行，說明程式的功能（要有執行截圖）
1.Read the following program, input it into computer, run it and interpret its functions

#include<iostream>
using namespace std;
int main()
{
	cout<<"Enter a degree in Celsius: ";
	double celsius;
	cin>>
 
celsius;
	double fahrenheit=(9.0/5)*celsius+32;
	cout<<"Fahrenheit degree is "<<fahrenheit;
	return 0;
}

2.閱讀下面的程式，在電腦中錄入，說明程式的功能（要有執行截圖）
2.Read the following program, input it into computer, run it and interpret its functions

#include<iostream>
using namespace std;

int main
 
()
{
	cout<<"Enter the radius and length of a cylinder: ";
	double radius,length;
	cin>>radius>>length;
	
	double area=radius*radius*3.14159;
	double volume=area*length;
	
	cout<<"The area is "<<area<<endl;
	cout<<"The volume is "
 
<<volume<<endl;
	return 0;
}

3.將下面的演算法翻譯成C++程式碼：
3.Translate the following algorithm into C++ code:
步驟1：宣告double型變數miles，初值為100
Step 1: Declare a double variable named miles with initial value 100
步驟2：宣告double型常量KILOMETERS_PER_MILE，初值為1.609
Step 2: Declare a double constant name KILOMETERS_PER_MILE with value 1.609
步驟3：宣告double型變數kilometers，將miles和KILOMETERS_PER_MILE相乘，並將結果賦給kilometers
Step 3: Declare a double variable named kilometers, multiply miles and KINOMETERS_PER_MILE, and assign the result to kilometers.
步驟4：在console介面顯示kilometers的值
Step 4: Display kilometers to the console.
問題：第4步後，顯示的kilometers的值是多少？
What is kilometers after Step 4?

#include<iostream>
using namespace std;
int main()
{
	double miles=100;
	const double KILOMETERS_PER_MILE=1.609;
	double kilometers=KILOMETERS_PER_MILE*miles;
	cout<<kilometers;
	return 0;
}

4.寫一個函式（名稱為MinMax），該函式能用引用返回兩個引數a和b的最大值和最小值。在main函式裡對該函式進行測試：
4.Write a function named MinMax that returns the minimum and maximum number of two variables a and b with double type by reference argument, and then write main function to test MinMax as follows:
[1] 定義兩個變數x和y
[1]defines two variables named x and y
[2] 從鍵盤輸入兩個數，並賦給x和y
[2]inputs values to them from keyboard
[3] 呼叫MinMax函式，並返回x和y的最小值和最大值
[3]calls MinMax to compute their minimum and maximum
[4] 輸出最小值和最大值
[4]outputs the minimum and maximum.

5.編寫兩個過載函式（名稱為valabs），它們分別能返回int型資料和double型資料的絕對值。編寫main函式對它們進行測試。
5.Write two overload functions named valabs that return the absolution of value with int type, double type respectively, then write main function to test valabs.

6.編寫函式，名稱為wadd，它能返回w * a + (1 – w) * b的結果，其中a、b和w都是double型引數，且w的預設值為0.5。編寫main函式對該函式進行測試。
6.Write a function named wadd that returns the result of w * a + (1 – w) * b, and a, b and w are double type, w is with default value 0.5, then write main function to test wadd.