#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;


float countif(float x[][2],int n,char rel[],int k)
{
    int darab=0,i;
    if(strcmp(rel,">")==0)
        for(i=0;i<n;i++)
            if(x[i][0]>k)
                darab++;
    if(strcmp(rel,"<")==0)
        for(i=0;i<n;i++)
            if(x[i][0]<k)
                darab++;
    if(strcmp(rel,">=")==0)
        for(i=0;i<n;i++)
            if(x[i][0]>=k)
                darab++;
    if(strcmp(rel,"<=")==0)
        for(i=0;i<n;i++)
            if(x[i][0]<=k)
                darab++;
    if(strcmp(rel,"==")==0)
        for(i=0;i<n;i++)
            if(x[i][0]==k)
                darab++;
    if(strcmp(rel,"!=")==0)
        for(i=0;i<n;i++)
            if(x[i][0]!=k)
                darab++;
    return darab;
}

int main()
{
    cout << "Hello world!" << endl;
    ifstream f("adatok.txt");
    float X[500][2];
    int N=0,i=0;
    char REL[2];
    while(!f.eof())
    {
        f>>X[i][0];
        f>>X[i][1];
        if(!f.eof())
        i++;
    }
    N=i;
    cout<<countif(X,N,"<",150);
    f.close();
    return 0;
}