81 lines
1.4 KiB
C
81 lines
1.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define LINESIZE 200
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#define MAXITEMS 100
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// struktura pre polozku jed. listka
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struct pizza {
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char name[LINESIZE];
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float price;
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};
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//funkcia na nacitanie jednej polozky
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int read_pizza(struct pizza *item) {
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char line1[LINESIZE];
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char line2[LINESIZE];
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//nazov
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if (fgets(line1, sizeof(line1), stdin) == NULL) {
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return 0;
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}
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line1[strcspn(line1, "\n")] = '\0';
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if (line1[0] == '\0') {
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return 0;
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}
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//cena
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if (fgets(line2, sizeof(line2), stdin) == NULL) {
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return 0;
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}
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line2[strcspn(line2, "\n")] = '\0';
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float value;
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if (sscanf(line2, "%f", &value) != 1) {
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return 0;
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}
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strcpy(item->name, line1);
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item->price = value;
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return 1;
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}
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//porovnanie pre qsort
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int compare_pizza(const void *a, const void *b){
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const struct pizza *pa = (const struct pizza *)a;
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const struct pizza *pb = (const struct pizza *)b;
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if (pa->price < pb->price) return -1;
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if (pa->price > pb->price) return 1;
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return strcmp(pa->name, pb->name);
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}
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int main() {
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struct pizza list[MAXITEMS];
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int count = 0;
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//nacitanie listka
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while (count < MAXITEMS && read_pizza(&list[count])){
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count++;
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}
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//ukoncit ak ziadne polozky
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if (count == 0) {
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return 0;
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}
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//triedenie
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qsort(list, count, sizeof(struct pizza), compare_pizza);
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//vypis listka
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for (int i = 0; i < count; i++){
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printf("%s\n", list[i].name);
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printf("%s\n", list[i].price);
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}
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return 0;
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}
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