UVA 10008 c++

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=949

#include<iostream>
#include<string.h>
using namespace std;
int main()
{
int n,len,temp;
while (cin >> n)
{
int count[26] = { 0 };
char c_temp;
char english[27] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char input[256];
for (int i = 0; i <= n; i++)
{
cin.getline(input, 256);
len = strlen(input);
for (int j = 0; j <= len; j++)
{
if (input[j] <= 90 && 65 <= input[j])
count[input[j] - 65]++;
else if (input[j] <= 122 && 97<=input[j])
count[input[j] - 97]++;
}
}
for (int i = 0; i <= 25; i++)
{
for (int j = 0; j <= 24; j++)
{
if (count[j]<count[j + 1]) //如果前項大於後項的話交換
{
temp = count[j];
c_temp = english[j];
count[j] = count[j + 1];
english[j] = english[j + 1];
count[j + 1] = temp;
english[j + 1] = c_temp;
}
}
}
for (int i = 0;; i++)
{
if (count[i] == 0)
break;
else
cout << english[i] << " " << count[i] << endl;
}
}
return 0;
}