C Coding

#include #include #include #define MAX_NAME_LENGTH 100 #define MAX_STUDENTS 50 // Define a structure to store student information typedef struct { int id; char name[MAX_NAME_LENGTH]; float grade; } Student; // Function to input student data void inputStudentData(Student* student, int index) { printf("Enter data for student %d\n", index + 1); printf("ID: "); scanf("%d", &student->id); printf("Name: "); getchar(); // Clear newline character from buffer fgets(student->name, MAX_NAME_LENGTH, stdin); student->name[strcspn(student->name, "\n")] = 0; // Remove newline printf("Grade: "); scanf("%f", &student->grade); } // Function to write student data to a file void writeToFile(const char* filename, Student* students, int count) { FILE* file = fopen(filename, "w"); if (file == NULL) { printf("Error opening file for writing.\n"); return; } for (int i = 0; i < count; ++i) { fprintf(file, "%d,%s,%.2f\n", students[i].id, students[i].name, students[i].grade); } fclose(file); printf("Data written to file successfully.\n"); } // Function to read and display student data from a file void readFromFile(const char* filename) { FILE* file = fopen(filename, "r"); if (file == NULL) { printf("Error opening file for reading.\n"); return; } char line[150]; printf("\n--- Student Data from File ---\n"); while (fgets(line, sizeof(line), file)) { printf("%s", line); } fclose(file); } int main() { Student students[MAX_STUDENTS]; int studentCount; printf("How many students do you want to enter (max %d)? ", MAX_STUDENTS); scanf("%d", &studentCount); if (studentCount < 1 || studentCount > MAX_STUDENTS) { printf("Invalid number of students.\n"); return 1; } for (int i = 0; i < studentCount; ++i) { inputStudentData(&students[i], i); } const char* filename = "students.txt"; writeToFile(filename, students, studentCount); readFromFile(filename); return 0;