// Edited
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
// Data
typedef struct{
float *grades_total;
float average;
float required_average;
char name[250];
char school_material[250];
int n;
bool student;
int number_students;
} Data;
typedef enum{
APROVED,
REPROVED,
UNKNOWN
} Student_Status;
void clear_input_buffer(){
int c;
while((c = getchar())!= '\n' && c != EOF);
}
Student_Status calculate_average(Data *data){
float sum = 0;
for (int i = 0; i < data->n; i++){
sum += data->grades_total[i];
}
data->average = sum / data->n;
if (data->average < data->required_average)
return REPROVED;
else
return APROVED;
}
int main(){
printf("Welcome to school grades manager! Press enter to start\n");
while (1){
Data *data = malloc(sizeof(Data));
if(!data){
printf("Internal error: Error to alloc a memory of data, please try close program and open again\n");
return 1;
}
memset(data, 0, sizeof(Data));
clear_input_buffer();
printf("How many students you want? ");
if(scanf("%d", &data->number_students) != 1 || data->number_students < 0){
printf("Please write a valid number\n");
clear_input_buffer();
continue;
}
clear_input_buffer();
Data *students = malloc(sizeof(Data) * data->number_students);
for (int i = 0; i < data->number_students; i++) {
printf("Write the name of student %d: ", i + 1);
fgets(students[i].name, sizeof(students[i].name), stdin);
students[i].name[strcspn(students[i].name, "\n")] = '\0';
printf("Write the school material of student %d: ", i + 1);
fgets(students[i].school_material, sizeof(students[i].school_material), stdin);
students[i].school_material[strcspn(students[i].school_material, "\n")] = '\0';
printf("How many grades you want for %s? ", students[i].name);
scanf("%d", &students[i].n);
clear_input_buffer();
students[i].grades_total = malloc(sizeof(float) * students[i].n);
for (int j = 0; j < students[i].n; j++) {
printf("Enter grade %d: ", j + 1);
scanf("%f", &students[i].grades_total[j]);
clear_input_buffer();
}
printf("Required average for %s: ", students[i].name);
scanf("%f", &students[i].required_average);
clear_input_buffer();
Student_Status status = calculate_average(&students[i]);
if (status == REPROVED){
printf("%s is reproved with average %.2f in %s\n", students[i].name, students[i].average, students[i].school_material);
}
else{
printf("%s is aproved with average %.2f in %s\n", students[i].name, students[i].average, students[i].school_material);
}
}
printf("How many grades you want? ");
if(!scanf("%d", &data->n)){
printf("Please write a valid number\n");
clear_input_buffer();
continue;
}
if (data->n <= 0){
printf("Please write a valid number\n");
clear_input_buffer();
continue;
}
data->grades_total = malloc(sizeof(float) * data->n);
if (!data->grades_total){
printf("Internal error: Error to alloc a memory of data, please try close program and open again\n");
return 1;
}
for (int i = 0; i < data->n; i++){
while(1){
printf("Enter grade %d: ", i + 1);
if(!scanf("%f", &data->grades_total[i]) || data->grades_total[i] < 0){
printf("Please write a valid number >= 0\n");
clear_input_buffer();
} else {
clear_input_buffer();
break;
}
}
}
for (int i = 0; i < data->number_students; i++){
free(students[i].grades_total);
}
free(data->grades_total);
free(data);
char chosse[4];
printf("You want to continue?\n");
scanf("%3s", chosse);
if(strcmp(chosse, "s") == 0){
break;
} else if(strcmp(chosse, "n")== 0){
exit(1);
} else {
clear_input_buffer();
printf("Please write 's' if you want to continue\n");
}
}
return 0;
}
