#include <stdio.h>
#include <stdlib.h>
 
struct Student {
    int roll;
    char name[50];
    float marks;
};
 
int main() {
    FILE *file;
    struct Student s;
 
    // Step 1: Open file in read mode
    file = fopen("students.txt", "r");
 
    if (file == NULL) {
        printf("Error! Cannot open file or file does not exist.\n");
        return 1;
    }
 
    // Step 2: Read and display student records
    printf("\n--- Student Records Retrieved from File ---\n");
    printf("Roll\tName\t\tMarks\n");
    printf("----------------------------------\n");
 
    while (fscanf(file, "%d %s %f", &s.roll, s.name, &s.marks) != EOF) {
        printf("%d\t%-10s\t%.2f\n", s.roll, s.name, s.marks);
    }
 
    fclose(file);
    return 0;
}