skuska

cv5/program.c

@@ -0,0 +1,91 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SIZE 100
+
+struct student {
+    char name[SIZE];
+    int votes;
+};
+
+int find_student(struct student *students, int size, const char *name);
+int compare(const void *p1, const void *p2);
+
+struct student databaza[SIZE];
+int size = 0;
+
+char line[SIZE];
+
+int main() {
+    memset(databaza, 0, SIZE * sizeof(struct student));
+
+    while (1) {
+        memset(line, 0, SIZE);
+        char *r = fgets(line, SIZE, stdin);
+
+        if (r == NULL) {
+            break;
+        }
+
+        int value = strtol(line, NULL, 10);
+        if (value == 0) {
+            printf("Zly format vstupu\n");
+            return 0;
+        }
+
+        char name[SIZE];
+        memset(name, 0, SIZE);
+        char *zaciatok_mena = strchr(line, ' ') + 1;
+        int velkost_mena = strlen(zaciatok_mena) - 1;
+
+        if (velkost_mena > 0) {
+            memcpy(name, zaciatok_mena, velkost_mena);
+            name[velkost_mena] = '\0';
+        } else {
+            printf("Nepodarilo sa nacitat meno\n");
+            return 0;
+        }
+
+        int find_student(struct student *students, int size, const char *name) {
+            for (int i = 0; i < size; ++i) {
+                if (strcmp(students[i].name, name) == 0) {
+                    return i;
+                }
+            }
+            return -1;
+        }
+
+        int id = find_student(databaza, size, name);
+        if (id < 0) {
+            strcpy(databaza[size].name, name);
+            databaza[size].votes = value;
+            size += 1;
+        } else {
+            databaza[id].votes += value;
+        }
+    }
+
+    qsort(databaza, size, sizeof(struct student), compare);
+
+    printf("Vysledky:\n");
+
+    for (int i = 0; i < size; ++i) {
+        printf("%d %s\n", databaza[i].votes, databaza[i].name);
+    }
+
+    return 0;
+}
+
+int compare(const void *p1, const void *p2) {
+    struct student *s1 = (struct student *)p1;
+    struct student *s2 = (struct student *)p2;
+
+    if (s1->votes < s2->votes) {
+        return 1;
+    } else if (s1->votes > s2->votes) {
+        return -1;
+    }
+
+    return strcmp(s1->name, s2->name);
+}