C++. Input file wont work?

Write a program that reads a file consisting of students test scores in the range 0-200, it should then determine the number of students having scores in each of the following ranges: 0-24, 25-49, 50-74, 75-99, 100-124, 125-149, 150-174, 175-200. Output the score ranges and the number of students. (Run your program with the following input data : 76, 89, 150, 135, 200, 76, 12, 100, 150, 28, 178, 189, 167, 200, 175, 150, 87, 99, 129, 149, 176, 200, 87, 35, 157, 189.

And here is my answer

#include <iostream>

#include <fstream>

#include <string>

using namespace std;

void initialize(int student[]);

void getStudent(int category, int student[]);

void printArray(int category, int student[]);

int main()

{

int category;

int score;

int student[maxCategory];

ifstream infile;

infile.open("testscore.txt");

if (!infile)

{

cout<<"Cannot open input file. "<< endl;

return 1;

}

initialize(student);

infile>>score;

while (!infile.eof())

{

category = getCategory(score);

getStudent(category, student);

infile>>score;

}

infile.close();

printArray(category, student);

system("Pause");

return 0;

}

void initialize(int student[])

{

int j;

for (j=0;j<=maxCategory;j++)

{

student[j]=0;

}

}

void getStudent(int c, int s[])

{

if (c<=maxCategory)

{

s++;

}}

void printArray(int category, int student[])

{

string scoreRange;

cout<<"Score Range"<<" ";

cout<<"Number of Student"<<endl;

for (category=0; category<=maxCategory;category++)

{

switch (category)

{

case 0:

scoreRange= "0-24";

break;

case 1:

scoreRange= "25-49";

break;

case 2:

scoreRange= "50-74";

break;

case 3:

scoreRange= "75-99";

break; case 4:

scoreRange= "100-124";

break;

case 5:

scoreRange= "125-149";

break;

case 6:

scoreRange= "150-174";

break;

case 7:

scoreRange= "175-200";

break;

}

cout<< scoreRange<<" ";

cout <<student[category]<<endl;

}

}

int getCategory(int score)

{

int scoreRange;

if (score >=0 && score <25)

scoreRange=0;

else if (score >=25 && score <50)

scoreRange=1;

else if (score >=50 && score <75)

scoreRange=2;

else if (score >=75 && score < 100)

scoreRange=3;

else if (score >=100 && score <125)

scoreRange=4;

else if (score >=125 && score <150)

scoreRange=5;

else if (score >=150 && score <175)

scoreRange=6;

else if (score >=175 && score <=200)

scoreRange=7;

else

cout<<"Invalid score";

return scoreRange;

}