Initialization

cv10/program.c

@@ -1,80 +1,56 @@
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
+#include <stdlib.h>
 
-typedef struct Student {
-    char name[100];
-    int applied;
-} Student;
+#define MAX_STUDENTS 100
+#define NAME_SIZE 50
 
-int cmpfunc(const void *a, const void *b) {
-    Student *student1 = (Student *)a;
-    Student *student2 = (Student *)b;
-    return strcmp(student1->name, student2->name);
+int compare_names(const void *a, const void *b) {
+    const char **name_a = a;
+    const char **name_b = b;
+    return strcmp(*name_a, *name_b);
 }
 
 int main() {
-    int max_students, num_students;
-    char name[100];
-    Student students[1000];
-    int students_accepted = 0;
-    int i, j;
+    int max_students, num_accepted = 0, num_students = 0;
+    char names[MAX_STUDENTS][NAME_SIZE];
+    char temp_name[NAME_SIZE];
 
-    if (scanf("%d", &max_students) != 1 || max_students <= 0) {
-        puts("Nespravny vstup");
+    scanf("%d", &max_students);
+    if (max_students <= 0 || max_students > MAX_STUDENTS) {
+        printf("Nespravny vstup\n");
         return 1;
     }
 
-    if (getchar() == '\n') {
-        puts("Nespravny vstup");
-        return 1;
-    }
+    memset(names, 0, sizeof(names));
 
-    if (scanf("%d", &num_students) != 1 || num_students <= 0) {
-        puts("Nespravny vstup");
-        return 1;
-    }
+    while (fgets(temp_name, sizeof(temp_name), stdin) != NULL && num_accepted < max_students) {
 
-    if (num_students > max_students) {
-        num_students = max_students;
-    }
+        int i, found = 0;
 
-    for (i = 0; i < num_students; i++) {
-        if (scanf("%s", name) != 1) {
-            puts("Ziadne prihlasky");
-            return 1;
-        }
-
-        for (j = 0; j < i; j++) {
-            if (strcmp(students[j].name, name) == 0) {
+        for (i = 0; i < num_accepted; i++) {
+            if (strcmp(names[i], temp_name) == 0) {
+                found = 1;
                 break;
             }
         }
 
-        if (j == i) {
-            strcpy(students[i].name, name);
-            students[i].applied = 1;
+        if (!found) {
+            strcpy(names[num_accepted], temp_name);
+            num_accepted++;
         }
+        num_students++;
     }
 
-    qsort(students, i, sizeof(Student), cmpfunc);
+    // sort the names by alphabet
+    qsort(names, num_accepted, sizeof(char*) * NAME_SIZE, compare_names);
 
-    printf("Prijati students:\n");
-    for (i = 0; i < max_students; i++) {
-        if (students[i].applied == 1) {
-            printf("%s\n", students[i].name);
-            students_accepted++;
+    if (num_accepted == 0) {
+        printf("Ziadne prihlasky");
     } else {
-            break;
-        }
-    }
-
-    if (students_accepted < num_students) {
-        printf("Neprijati studenti:\n");
-        for (i = 0; i < num_students; i++) {
-            if (students[i].applied == 0) {
-                printf("%s\n", students[i].name);
-            }
+        printf("Prijati studenti:\n");
+        for (int i = 0; i < num_accepted; i++) {
+            printf("%s", names[i]);
         }
     }