3. Write a program to compute numeric grades for a course. The course records ar

Question

3. Write a program to compute numeric grades for a course. The course records are in a file that will serve as the input file. The input file is in exactly the following format: Each line contains a student’s last name, then one space, then the student’s first name, then one space, then five quiz scores:

ex:

anna james 100 99 98 97 96
sarah wales 45 97 32 87 25
…

Your program will take its input from this file and send it’s output to the screen. The output will be the name of the student and his/her average all on one line on the screen. Use the file “roster.txt”.

Explanation / Answer

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i hope this code will help you

#include <iostream>
#include <fstream>

#include <string>

using namespace std;
void calculate(ifstream&, ofstream&);
int main()
{
ifstream in;
ofstream out;

in.open("input.txt");

if(in.fail())
{ cout<<"Input file failed. Please try again or use another file./n";
system("pause");
return 1;
}

out.open("output.txt");
calculate(in,out);
out.close();
in.close();

system("pause");
return 0;
}

void calculate(ifstream& in, ofstream& out)

{
int i,sum,a[5];
string first,last;
double avg;
in>>first;
while(in)

{sum=0;
in>>last;
for(i=0;i<5;i++)
{in>>a[i];
sum+=a[i];
}

out<<first<<" "<<last<<" ";
for(i=0;i<5;i++)
out<<a[i]<<" ";
avg=sum/5.;
out<<avg<<endl;
in>>first;
}
}

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