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

int main()
{
    int i = 0, a = 0, c = 0, g = 0, t = 0;
    string s;
    string line,line1;
    int j = 0;
    ifstream myfile("E:\\short.fasta");
    getline(myfile, line1);
    if (myfile.is_open())
    {
        while (!myfile.eof())
        {
                getline(myfile, line);
                s += line;
        }
        myfile.close();
    }
    else cout << "Error!";

    for (int i = 0; i < s.length() - 1; i++)
    {
        if (s[i] == ('A')) { a++; } else
        { if (s[i] == ('a')) { a++; } else
            { if (s[i] == ('C')) { c++; } else
                { if (s[i] == ('c')) { c++; } else
                    { if (s[i] == ('G')) { g++; } else
                        { if (s[i] == ('g')) { g++; } else
                            { if (s[i] == ('T')) { t++; } else
                                { if (s[i] == ('t')) { t++; } else
                                    {

                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    cout << "A - " << a << endl;
    cout << "C - " << c << endl;
    cout << "G - " << g << endl;
    cout << "T - " << t << endl;
    //f.close();
    system("pause");
    return 0;
}