Calculating and generates a report card for a student

I'm working on this small program for practice and would like to know how I could improve it from here. I'm still a relative beginner with C++ and would like to know if there is a better why to design this program.

Things I want to do:

-
Implement a while loop so that the program will continue to take input and write to the file until the user is done.

-
Use and ifstream as a way to input the data instead of through the console and write the results to the output file.

Thoughts? Other things I can implement to build on my current knowledge?

```
// Calculates and generates a report card of students final grades

#include
#include
using namespace std;

const float numOfAssignments = 4;
const float assignmentWeight = 0.4;
const float midtermWeight = 0.15;
const float finalWeight = 0.35;
const float participationWeight = 0.1;

float assignmentScore();
float midtermScore();
float finalScore();
float participationScore();
string student();

int main(){

float finalGrade, assignments, midterm, final, participation;
string name;

ofstream Grades;
Grades.open("finalgrade.txt");

name = student();
assignments = assignmentScore();
midterm = midtermScore();
final = finalScore();
participation = participationScore();

// Adds all scores together for final grade
finalGrade = assignments + midterm + final + participation;

// Check if there is a file to write to
if (Grades.is_open()){
Grades 70){
Grades 90){
Grades > assign1;

cout > assign2;

cout > assign3;

cout > assign4;

average = (assign1 + assign2 + assign3 + assign4) / numOfAssignments;
assignmentScore = average * assignmentWeight;

cout > midterm;

midtermScore = midterm * midtermWeight;
cout > final;

finalScore = final * finalWeight;
cout > participation;

participationScore = participation * participationWeight;
cout > first_name;

cout > last_name;

student = fir

Congratulations for using some constants, but you could use more in the following lines:

Grades  70){

Here the maximum score is hardcoded (written directly inside the source code), I suggest making the max scores constants too.

Please aviod all those prototypes:

float assignmentScore();
float midtermScore();
float finalScore();
float participationScore();
string student();

just move the main function at the end and you can delete them.

Please check for more errors in the UI, the following cases are not handled:

• A name with spaces is entered (such names exist so you cannot crash on them).

• Nothing happens if I enter a negative or ridiculously big number, you should put some checks for that.

• If I enter a string instead of a number the program crashes, you should handle that and ask for input again.

using namespace std;

should be avoided.

You could write a loop and/or a function to remove some of the duplication from below:

cout > assign1;

cout > assign2;

cout > assign3;

cout > assign4;

StackExchange Code Review Q#86178, answer score: 3