Question

IN C You will be creating a program to help a teacher calculate final grades for a class. The program will calculate a final letter grade base on a standard 90/80/70/60 scale. You will be taking input from a file that contains all of the names and grades of each student. You will find the average for each student and output each student's final letter grade. Your program should accept the filename from the command-line

Add error checking to make sure the appropriate number of command line arguments were passed Read in the input file correctly Add error checking to make sure the file was opened correctly Calculate the final grade for each student Generate a report that matches the example below Show table of grades with final letter grade Print off all names with the floating point average

Your program should: Calculate final grades, Print the report

Should include:

void getGrades(...);

void printGrades(...);

void getStudents(...);

void printStudents(...);

void calcGrades(...);

void printFinalLetterGrades(...);

void printPercentageGrades(...);

Answer 1

SOLUTION IN C CODE:-

#include <stdio.h>
#define SIZE 10
void getGrades(int grades[][SIZE], int size, int numOfGrades);
void printGrades(int grades[][SIZE], int size, int numOfGrades);
void getStudents(char names[][50], int size);
void printStudents(char names[][50], int size);
void calcGrades(int grades[][SIZE], char letterGrades[], int size, int numOfGrades);
void printFinalGrades(char names[][50], int grades[][SIZE], char letterGrades[], int size, int numOfGrades);
int main()
{
    int grades[SIZE][SIZE], numOfStudents, numOfGrades;
    char names[SIZE][50], letterGrades[SIZE];
    printf("Enter the number of students: ");
    scanf("%d", &numOfStudents);
    getStudents(names, numOfStudents);
    printf("Enter the number of grades for each student: ");
    scanf("%d", &numOfGrades);
    getGrades(grades, numOfStudents, numOfGrades);
    calcGrades(grades, letterGrades, numOfStudents, numOfGrades);
    printFinalGrades(names, grades, letterGrades, numOfStudents, numOfGrades);
}
void getStudents(char names[][50], int size)
{
    for(int i = 0; i < size; i++)
    {
       printf("Enter the name for student #%i: ", i+1);
       scanf("%s", names[i]);
    }
}
void printStudents(char names[][50], int size)
{
    for(int i = 0; i < size; i++)
        printf("%s\n", names[i]);
    printf("\n");  
}
void getGrades(int grades[][SIZE], int size, int numOfGrades)
{
    for(int i = 0; i < size; i++)
    {
       printf("Enter %d grades for student #%d: ", numOfGrades, i+1);
       for(int j = 0; j < numOfGrades; j++)
           scanf("%d", &grades[i][j]);
    }      
}
void calcGrades(int grades[][SIZE], char letterGrades[], int size, int numOfGrades)
{
    for(int i = 0; i < size; i++)
    {
       float sum = 0;
       for(int j = 0; j < numOfGrades; j++)
           sum += grades[i][j];
       sum /= numOfGrades;
       if(sum >= 90)
           letterGrades[i] = 'A';
       else if(sum >= 80)
           letterGrades[i] = 'B';
       else if(sum >= 70)
           letterGrades[i] = 'C';
       else if(sum >= 60)
           letterGrades[i] = 'D';
       else
           letterGrades[i] = 'F';                  
    }
}
void printGrades(int grades[][SIZE], int size, int numOfGrades)   
{
    for(int i = 0; i < size; i++)
    {
       for(int j = 0; j < numOfGrades; j++)
           printf("%d\t", grades[i][j]);
       printf("\n");  
    }
}
void printFinalGrades(char names[][50], int grades[][SIZE], char letterGrades[], int size, int numOfGrades)
{
    for(int i = 0; i < size; i++)
    {
       printf("%s\t", names[i]);
       for(int j = 0; j < numOfGrades; j++)
           printf("%d\t", grades[i][j]);
       printf("%c\n", letterGrades[i]);  
    }
}

And the output screenshot is:

please upvote sir.....