私はこの任務に行き詰まりました。max 、 min 、 mean を計算するよりも、ユーザーが入力するテキストファイルからいくつかの成績を取得することです。問題は、コンパイルしようとするたびにこれが得られることです
St.java:10: readfile(int[],java.lang.String) in St cannot be applied to (int[])
int n = readfile (grades);
ソースコード:
import java.io.*;
import java.util.Scanner;
public class St
{
public static void main ( String [] a )
{
Scanner kbd = new Scanner(System.in);
int count = 0;
int [] grades = new int [500];
int n = readfile (grades);
System.out.println("What file contains the data?");
String file = kbd.nextLine();
System.out.println("The maximum grade is: " + max(grades,n));
System.out.println("The minimum grade is: " + min(grades,n));
System.out.println("The mean grade is: "+ mean(grades,n));
}
public static double mean(int [] grades,int n)
{
double sum = 0;
for(int i = 0; i < n; i++)
{
sum = sum + grades[i];
}
return sum/n;
}
public static int readfile (int [] grades, String file)
{
int count = 0;
try
{
Scanner f = new Scanner (new File (file)); // name of file
while (f.hasNext()) // checks if there is more input in the file
{
grades[count]=f.nextInt (); // grabs the next piece of input
count++; // moves onto the next piece of input (increasing count)
}
}
catch (IOException e)
{
System.err.println (e);
System.exit(0);
}
return count;
}
public static void writeArray (int [] grades , int n)
{
for (int i = 0; i < n; i++)
{
System.out.println (grades[i]);
}
}
public static int max(int [] y,int m)
{
int mx = 0;
for(int i = 0; i < m; i++)
{
if(y[i] > mx)
{
mx = y[i];
}
}
return mx;
}
public static int min(int [] grades,int n)
{
int mn = 0;
for(int i = 0; i < n; i++)
{
if(grades[i] < mn)
{
mn = grades[i];
}
}
return mn;
}
}