using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace ConsoleCalEng
{
class Program
{
static void Main(string[] args)
{
string input ;
string fileName;
char cha;
int k;
FileInfo f;
StreamReader sr;
Console.WriteLine("Please inpt the File path:");
input = Console.ReadLine();
f = new FileInfo(input);
try
{
sr = f.OpenText();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return;
}
int[] letter = new int[26];
while (sr.Peek() >= 0)
{
cha = (char)sr.Read();
if (cha >= 'A' && cha <= 'Z')
{
k = (int) cha - 65;
letter[k]++;
}
if (cha >= 'a' && cha <= 'z'){
k = (int) cha - 97;
letter[k]++;
}
}
Console.WriteLine("該檔案各英文出現的次數:");
for (int i = 0; i < 26; i++)
{
Console.WriteLine("{0},{1} 出現的次數:{2}",(char)(65+i),(char)(97+i),letter[i]);
}
sr.Close();
Console.Read();
}
}
}
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