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Question 4 done

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Alex
2024-09-23 15:23:47 -05:00
parent 6f12a51ccf
commit f52a97a56e
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Q4.c
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@@ -1,56 +1,63 @@
#include <stdio.h> #include <stdio.h>
//Question 4 //Question 4
// Finds average value of array
double find_average(const int arr[], int len) { double find_average(const int arr[], int len) {
double sum = 0.0; double sum = 0.0;
for(int i = 0; i < len; i++) { for(int i = 0; i < len; i++) {
sum += arr[i]; sum += arr[i];
} }
return sum/len; return sum/len;
} }
// Returns the INDEX of the highest value in array // Returns the INDEX of the highest value in array
int find_index_highest(const double arr[], int len) { int find_index_highest(const double arr[], int len) {
double highest = arr[0]; double highest = arr[0];
int index_highest = 0; int index_highest = 0;
for(int i = 0; i < len; i++) { for(int i = 0; i < len; i++) {
if(arr[i] > highest) { if(arr[i] > highest) {
highest = arr[i]; highest = arr[i];
index_highest = i; index_highest = i;
} }
} }
return index_highest; return index_highest;
} }
int main() { int main() {
int num_students, num_subjects; // To test the functions
printf("Enter number of students: "); int num_students, num_subjects;
scanf("%d", &num_students); printf("Enter number of students: ");
printf("Enter number of subjects: "); scanf("%d", &num_students);
scanf("%d", &num_subjects); printf("Enter number of subjects: ");
scanf("%d", &num_subjects);
int grade_matrix[num_students][num_subjects]; // Create matrix of grades and use input to assign its values
for(int i = 0; i < num_students; i++) { int grade_matrix[num_students][num_subjects];
printf("Enter student %d's grades: ", i+1); for(int i = 0; i < num_students; i++) {
for(int j = 0; j < num_subjects; j++) { printf("Enter student %d's grades: ", i+1);
scanf("%d", &grade_matrix[i][j]); for(int j = 0; j < num_subjects; j++) {
} scanf("%d", &grade_matrix[i][j]);
printf("\n"); }
} printf("\n");
}
double average_grades[num_students]; // Array to hold average grades of students
printf("Average Grades:\n"); double average_grades[num_students];
for(int i = 0; i < num_students; i++) { // Print every students average grades
average_grades[i] = find_average(grade_matrix[i], num_subjects); printf("Average Grades:\n");
printf("Student %d: %0.02f\n", i+1, average_grades[i]); for(int i = 0; i < num_students; i++) {
} average_grades[i] = find_average(grade_matrix[i], num_subjects);
printf("Student %d: %0.02f\n", i+1, average_grades[i]); // Formatted to two decimal places
}
printf("Student with Highest Average: Student %d\n", (find_index_highest(average_grades, num_students) +1)); printf("Student with Highest Average: Student %d\n", (find_index_highest(average_grades, num_students) +1));
printf("Students with average >= 75:\n"); printf("Students with average >= 75:\n");
for(int i = 0; i < num_students; i++) { for(int i = 0; i < num_students; i++) {
if(average_grades[i] >= 75.0) if(average_grades[i] >= 75.0)
printf("Student %d\n", i+1); printf("Student %d\n", i+1);
} }
return 0; return 0;
} }