grade average using c++

[RALPH2133]

hi guys
i new in this section
i have a doubt;
im trying to find the student average on my execise,here a copy

#include <cstdlib>
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
 
int main(int argc, char *argv[])
{
    ifstream infile;
  ofstream outfile;
  infile.open("filein.dat");
  outfile.open("outrep.txt");
 
  outfile << "\t\t\t TURABO UNIVERSITY" << endl;
  outfile << "\t\t\tGRADE AVERAGE\n" << endl;
  outfile << "\tSTUDENT" << "\t\tFIRST" << "\t\tSECOND" << "\t\tTHIRD" << "\t\tSTUDENT" << endl;
  outfile << "\tNUMBER" << "\t\tExam" << "\t\tExam" << "\t\tExam" << "\t\tAVERAGE" << endl;
 
 
    while (infile) 
   string sn;
      int sn;
      int fe=00;
      int se=00;
      int te=00;
      int st=00;
     float avr=00.0;
     float cavr=00;
 
      sn=458;
      fe=90;
      se=85;
      te=75;
      avr=fe+se+te/3;
      cavr=cavr+avr;
      outfile << "\t" << sn << "\t\t" << fe << "\t\t" << se << "\t\t" << te << endl;
 
      sn=459;
      fe=100;
      se=88;
      te=78;
      avr=fe+se+te/3;
      cavr=cavr+avr;
      outfile << "\t" << sn << "\t\t" << fe << "\t\t" << se << "\t\t" << te << endl;
 
      sn=4510;
      fe=67;
      se=90;
      te=99;
      avr=fe+se+te/3;
      outfile << "\t" << sn << "\t\t" << fe << "\t\t" << se << "\t\t" << te << endl;
 
 
      st=st+3;
 
      cavr=cavr+avr;
 
 
      outfile << "\tSTUDENT TOTAL: " << st << endl << endl;
 
      outfile << "\tCLASS AVERAGE: " << cavr << endl << endl;
 
    system("PAUSE");
    return EXIT_SUCCESS;

[kaioshin00]

hi guys
i new in this section
i have a doubt;
im trying to find the student average on my execise,here a copy

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

int main(int argc, char *argv[])
{
ifstream infile;
ofstream outfile;
infile.open("filein.dat");
outfile.open("outrep.txt");

outfile << "\t\t\t TURABO UNIVERSITY" << endl;
outfile << "\t\t\tGRADE AVERAGE\n" << endl;
outfile << "\tSTUDENT" << "\t\tFIRST" << "\t\tSECOND" << "\t\tTHIRD" << "\t\tSTUDENT" << endl;
outfile << "\tNUMBER" << "\t\tExam" << "\t\tExam" << "\t\tExam" << "\t\tAVERAGE" << endl;


while (infile)
string sn;
int sn;
int fe=00;
int se=00;
int te=00;
int st=00;
float avr=00.0;
float cavr=00;

sn=458;
fe=90;
se=85;
te=75;
avr=fe+se+te/3;
cavr=cavr+avr;
outfile << "\t" << sn << "\t\t" << fe << "\t\t" << se << "\t\t" << te << endl;

sn=459;
fe=100;
se=88;
te=78;
avr=fe+se+te/3;
cavr=cavr+avr;
outfile << "\t" << sn << "\t\t" << fe << "\t\t" << se << "\t\t" << te << endl;

sn=4510;
fe=67;
se=90;
te=99;
avr=fe+se+te/3;
outfile << "\t" << sn << "\t\t" << fe << "\t\t" << se << "\t\t" << te << endl;


st=st+3;

cavr=cavr+avr;


outfile << "\tSTUDENT TOTAL: " << st << endl << endl;

outfile << "\tCLASS AVERAGE: " << cavr << endl << endl;

system("PAUSE");
return EXIT_SUCCESS;

I'm not sure what exactly all your variables stand for and what they're doing, but I did notice this:

avr=fe+se+te/3;

Multiplication and division have a higher preference than addition or subtraction, so this would divide te by 3, and then add fe and se to that.

I'm guessing avr means average, so you should probably try:

avr = (fe+se+te)/3;