gistfile1.cpp

#include<iostream>
#include<cstdlib>
#include<cstdio>
using namespace std;
class Dane{
FILE *fp;
int colnum;
int rownum;

public:
Dane(const char* filename){
	fp = fopen(filename,"r");
	if(!fp){
		printf("error");
	}

}
void average(){
		float a=0,b=0,c=0,d=0;
		float tempa,tempb,tempc,tempd;
		fscanf(fp,"%d",&colnum);
		rewind(fp);
		while(fgetc(fp) != EOF){
			fseek(fp,-1,SEEK_CUR);
			if (fgetc(fp)=='\n')
				{rownum++;}
			if(rownum>1){
				fscanf(fp,"%f,%f,%f,%f",&tempa,&tempb,&tempc,&tempd);
				a+=tempa;
				b+=tempb;
				c+=tempc;
				d+=tempc;
			}

		}
		printf("Średnia: %f %f %f %f\n",a/(rownum-2),b/(rownum-2),c/(rownum-2),d/(rownum-2));
	}
};
int main(){

string filename  = "Dane.csv";
Dane d = Dane(filename.c_str());
d.average();
return 0;
}