2

du2/program.c

@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define MAX 1000
+#define SIZE 101
+
+struct pizza {
+    char name[SIZE];
+    float price;
+};
+
+int main() {
+    struct pizza list[MAX];
+    int count = 0;
+
+    char name[SIZE];
+    char price_str[SIZE];
+    float price;
+
+    while (1) {
+        if (fgets(name, SIZE, stdin) == NULL) break;
+        name[strcspn(name, "\n")] = 0;
+        if (strlen(name) == 0) break;
+        if (fgets(price_str, SIZE, stdin) == NULL) break;
+        price_str[strcspn(price_str, "\n")] = 0;
+        if (sscanf(price_str, "%f", &price) != 1) break;
+        if (price <= 0) break;
+
+        strcpy(list[count].name, name);
+        list[count].price = price;
+        count++;
+        if (count >= MAX) break;
+    }
+
+    for (int i = 0; i < count - 1; i++) {
+        for (int j = 0; j < count - i - 1; j++) {
+            if (list[j].price > list[j + 1].price ||
+               (list[j].price == list[j + 1].price && strcmp(list[j].name, list[j + 1].name) > 0)) {
+                struct pizza temp = list[j];
+                list[j] = list[j + 1];
+                list[j + 1] = temp;
+            }
+        }
+    }
+    for (int i = 0; i < count; i++) {
+        printf("%s\n%.6f\n", list[i].name, list[i].price);
+    }
+
+    return 0;
+}
+