Write a C program to write and read symbol number, name and percentage of any 10 students to/from data file "students.txt".

#include <stdio.h>
#include <stdlib.h>

struct student {
    int symbol_number;
    char name[50];
    float percentage;
};

int main() {
    FILE *fp;
    int i;

    // create an array of 10 students
    struct student students[10];

    // prompt the user to enter details for each student
    printf("Enter details of 10 students:\n");
    for (i = 0; i < 10; i++) {
        printf("Student %d:\n", i+1);
        printf("Symbol number: ");
        scanf("%d", &students[i].symbol_number);
        printf("Name: ");
        scanf("%s", students[i].name);
        printf("Percentage: ");
        scanf("%f", &students[i].percentage);
    }

    // write student data to file
    fp = fopen("students.txt", "w");
    if (fp == NULL) {
        printf("Error opening file.\n");
        exit(1);
    }
    for (i = 0; i < 10; i++) {
        fprintf(fp, "%d %s %f\n", students[i].symbol_number, students[i].name, students[i].percentage);
    }
    fclose(fp);

    // read student data from file
    fp = fopen("students.txt", "r");
    if (fp == NULL) {
        printf("Error opening file.\n");
        exit(1);
    }
    printf("\nStudent data read from file:\n");
    for (i = 0; i < 10; i++) {
        fscanf(fp, "%d %s %f", &students[i].symbol_number, students[i].name, &students[i].percentage);
        printf("Symbol number: %d, Name: %s, Percentage: %.2f\n", students[i].symbol_number, students[i].name, students[i].percentage);
    }
    fclose(fp);

    return 0;
}