Question

Multidimensional Arrays
Design a C program which uses two two-dimensional arrays as follows:
- an array which can store up to 50 student names where a name is up to 25 characters long
- an array which can store marks for 5 courses for up to 50 students
The program should first obtain student names and their corresponding marks for a requested number of students from the user. Please note that the program should reject any number of students that is requested by the user which is greater than 50. The program will compute the average mark for each course and then display all students and their marks, as well as the average mark for each course.
A sample output produced by the program is shown below, if assumed that the user entered marks for 4 students. Please note that the computation of the average mark for each course should use type casting.

Student PRG DGS MTH ECR GED
Ann Smart 93 85 87 83 90
Mike Lazy 65 57 61 58 68
Yo Yo 78 65 69 72 75
Ma Ma 84 79 83 81 83
AVERAGE 80.0 71.5 75.0 73.5 79.0

It is required to submit your source code file, i.e. Lab5.c file as well as a file with your program's run screen captures.

Answer 1

Below is code in C language

#include <stdio.h>

int main()
{
    int count,i,j;
    double avg1=0, avg2=0, avg3=0, avg4=0, avg5=0;
    printf("Enter total number of students: ");
    scanf("%d", &count);
    if(count > 50)
    {
        printf("Sorry you can not enter marks for more than 50 students");
    }
    char students_name[50][25];
    int students_marks[50][5];
    
    //Take students name and 5 subjects marks
    for(i=0; i<count; i++)
    {
        printf("Enter student: %d name: ", i+1);
        getchar();
        scanf("%[^\n]s", students_name[i]);
        printf("Enter 5 subject marks for student %d: ", i+1);
        for(j=0; j<5; j++)
        {
            scanf("%d", &students_marks[i][j]);
        }
    }
    
    //Calculate subject vise average
    for(i=0; i<count; i++)
    {
            avg1 += students_marks[i][0];
            avg2 += students_marks[i][1];
            avg3 += students_marks[i][2];
            avg4 += students_marks[i][3];
            avg5 += students_marks[i][4];
    }
    
    //Type cast average
    avg1 = (double) avg1/count;
    avg2 = (double) avg2/count;
    avg3 = (double) avg3/count;
    avg4 = (double) avg4/count;
    avg5 = (double) avg5/count;
    
    //print students name, marks and subject vise average mark
    printf("Student  PRG DGS MTH ECR GED");
    for(i=0; i<count; i++)
    {
            printf("\n%s %d %d %d %d %d",students_name[i],students_marks[i][0],students_marks[i][1],students_marks[i][2],students_marks[i][3],students_marks[i][4]);
    }
    
    printf("\nAVERAGE %0.1f %0.1f %0.1f %0.1f %0.1f",avg1,avg2,avg3,avg4,avg5);
   
    
    return 0;
}

Output: