scores again

#include <iostream>
#include <fstream>
using namespace std;

int main()
{

char filename[50];
ifstream myfile;
cin.getline(filename, 50);
myfile.open("filename");

if (!myfile.is_open())
{
cout << " Not open! ";
}

char word[50];
myfile >> word;
while(myfile.good()){
    cout << word << "  ";
    myfile >> word;
}

double grades[26];
int i, studentNumber=0;
int score0_24=0, score25_49=0, score50_74=0,
    score75_99=0, score100_124=0, score125_149=0,
    score150_174=0, score175_200=0;

cout << score150_174 << endl;

for(i=0; i<26; i++)
{
    grades[i] = 0;
    cout << grades[i] << " ";
}

    for(i=0; i<26; i++)
        {
            myfile >> grades[i];
            myfile.ignore(2);
            studentNumber++;
        }

    myfile.close();

for(i=0; i<26; i++)
{
    if(grades[i] <= 24)
        score0_24++;
    if(grades[i] >= 25 && grades[i] <= 49)
        score25_49++;
    if(grades[i] >= 50 && grades[i] <= 74)
        score50_74++;
    if(grades[i] >= 75 && grades[i] <= 99)
        score75_99++;
    if(grades[i] >= 100 && grades[i] <= 124)
        score100_124++;
    if(grades[i] >= 125 && grades[i] <= 149)
        score125_149++;
    if(grades[i] >= 150 && grades[i] <= 174)
        score150_174++;
    if(grades[i] >= 175 && grades[i] <= 200)
        score175_200++;
}

cout << "Number of students: " << studentNumber << endl;
cout << "0-24: " << score0_24 << endl;
cout << "25-49: " << score25_49 << endl;
cout << "50-74: " << score50_74 << endl;
cout << "75-99: " << score75_99 << endl;
cout << "100-124: " << score100_124 << endl;
cout << "125-149: " << score125_149 << endl;
cout << "150-174: " << score150_174 << endl;
cout << "175-200: " << score175_200 << endl;

return 0;
}