#include <stdio.h>
#include <string.h>
 
struct Student {
    int rollNo;
    char name[50];
    float marks;
    char result[10]; // "Pass" or "Fail"
};
 
int main() {
    struct Student students[100];
    int n, i;
    float passMarks = 40.0; // Minimum marks to pass
 
    printf("Enter number of students: ");
    scanf("%d", &n);
    getchar(); // clear newline
 
    // Input student data
    for (i = 0; i < n; i++) {
        printf("\nEnter details for Student %d:\n", i + 1);
        printf("Roll Number: ");
        scanf("%d", &students[i].rollNo);
        getchar(); // clear newline
 
        printf("Name: ");
        fgets(students[i].name, sizeof(students[i].name), stdin);
        students[i].name[strcspn(students[i].name, "\n")] = '\0';
 
        printf("Marks: ");
        scanf("%f", &students[i].marks);
 
        // Determine result
        if (students[i].marks >= passMarks)
            strcpy(students[i].result, "Pass");
        else
            strcpy(students[i].result, "Fail");
    }
 
    // Display all records
    printf("\n==================== EXAM RESULTS ====================\n");
    printf("%-10s %-25s %-10s %-10s\n", "Roll No", "Name", "Marks", "Result");
    printf("------------------------------------------------------\n");
 
    for (i = 0; i < n; i++) {
        printf("%-10d %-25s %-10.2f %-10s\n",
               students[i].rollNo,
               students[i].name,
               students[i].marks,
               students[i].result);
    }
 
    printf("======================================================\n");
 
    return 0;
}