Structure

#include <stdio.h>

struct Student {
    char name[40];
    int id;
    double marks;
};



int main() {
    int size;
    printf("Enter student's number:\n");
    scanf("%d", &size);

    struct Student students[size];

    // Input
    for (int i = 0; i < size; i++) {
        printf("Enter %d no student's name:\n", i + 1);
        fflush(stdin);
        gets(students[i].name);
        fflush(stdout);
        printf("Enter student's ID:\n");
        scanf("%d", &students[i].id);
        printf("Enter student's marks:\n");
        scanf("%lf", &students[i].marks);
    }

    // Output
    printf("\nOutput:\n");
    for (int i = 0; i < size; i++) {
        printf("Name: %s\n", students[i].name);
        printf("ID: %d\n", students[i].id);
        printf("Marks: %lf\n\n", students[i].marks);
    }
    printf("\n");


    double maxNum = -1;
    int index = -1;

    for (int i = 0; i < size; i++) {
        if(students[i].marks > maxNum) {
            maxNum = students[i].marks;
            index = i;
        }
    }
    printf("\nMax number student: %s\n", students[index].name);
    printf("Maxmimum marks is: %lf\n", students[index].marks);
    printf("ID: %d\n", students[index].id);
}

// int main() {
//  struct Student studentOne;
//  printf("Enter student's name:\n");
//  gets(studentOne.name);
//  printf("Enter student's ID:\n");
//  scanf("%d", &studentOne.id);
//  printf("Enter student's marks:\n");
//  scanf("%lf", &studentOne.marks);

//  printf("\nOutput:\n");
//  printf("Name: %s\n", studentOne.name);
//  printf("ID: %d\n", studentOne.id);
//  printf("Marks: %lf\n", studentOne.marks);
// }

/*

    Structure
        -> Create a structure
        -> declare it
        -> Input
        -> Output
    Array of Structure
        -> Create a structure
        -> declare it
        -> Input
        -> Output
        -> Find Maximum mark
        -> Find Maximum student's name

*/