C # 7 function Green song scoring weather forecast

Function:

Data type -- variable constant -- operator Expression -- statement (order, branch, loop)-- array -- function

function in a program: a block of code that completes a relatively independent work.

Functions in Mathematics: Highly abstract.

Function four elements: function name, input, output, processing

function definition:

[Static] return type function name ( input parameter list )

{

function Body--processing

}

Function call:

Function name ( parameter ); --suitable for calling functions with no return value

The data type variable = function name ( parameter ); --suitable for calling functions that have return values.

Things to Master today:

1. what is a function?

2. can realize the benefits of the function: reusable, can division of labor, clear and easy to read

3. remember the four elements of the function.

4. A simple function is defined, and this function is called.

Example: function

Class Program//function more than add class, look for the analysis of each function do not find the wrong place

{

static void M1ain (string[] args)

{

Showheader ();

String city = Shuru ();

String Jieguo = Yunsuan (city);

Console.WriteLine ("Weather forecast only for reference:" + Jieguo);

}

private static string Yunsuan (String city)

{

Weather

String[] s = new string[] {"Fine", "fine", "clear", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "Sunny", "overcast", "cloudy", "Light Rain", "medium Rain "," Heavy Rain "," Rainstorm "," thunderstorm "," Snow "," Snow "," Snow "," Haze "," Fog "};

Random rand = new Random ();

int n = rand. Next (s.length); The subscript of the weather.

String TQ = S[n];

Temperature

int c = Rand. Next (70);

c-= 30;

String Jieguo = "Tomorrow's weather conditions:" + City + ", weather:" + TQ + ", Temperature:" + C;

return Jieguo;

}

private static string Shuru ()

{

Console.Write ("City:");

String city = Console.ReadLine ();

return city;

}

private static void Showheader ()

{

Console.WriteLine ("************* Weather Forecast ****************");

Console.WriteLine ("******** Zibo Meteorological Observatory Authority issued ****************");

Console.WriteLine ("******** If there is an anomaly, purely accidental ****************");

Console.WriteLine ("* * * * * * only for personal testing and hobby use, not for commercial operation **********");

}

}

Example: Green Song race score

Class Class1

{

static void Main (string[] args)

{

Int[] A = new int[10];

Scoreboard

Shuru (a);

Sort

Paixu (a);

Arithmetic averaging

Double avg = Yunsuan (a);

Output display

Shuchu (A, AVG);

}

private static void Shuchu (int[] A, double avg)

{

Console.WriteLine ("Remove two highest points:" + a[0] + "and" + a[1]);

Console.WriteLine ("Minus two minimum points:" + a[a.length-1] + "and" + a[a.length-2]);

Console.WriteLine ("The contestant eventually has to be divided into:" + avg);

}

private static Double Yunsuan (int[] a)

{

To find the total

int sum = 0;

for (int i = 2; I <= a.length-3; i++)

{

Sum + = A[i];

}

Find average

Double avg = (1.0 * sum)/(A.LENGTH-4);

return avg;

}

private static void Paixu (int[] a)

{

for (int i = 1; I <= a.length-1; i++)

{

for (int j = 1; J <= A.length-i; j + +)

{

if (A[j] > A[j-1])

{

int temp = A[j];

A[J] = a[j-1];

A[J-1] = temp;

}

}

}

}

private static void Shuru (int[] a)

{

for (int i = 0; i < a.length; i++)

{

Console.Write ("Please" + (i + 1) + "Judge Scoreboard:");

A[i] = Convert.ToInt32 (Console.ReadLine ());

}

}

}

C # 7 function Green song scoring weather forecast