Aktualizovat "program.c

program.c

@@ -0,0 +1,151 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LINE_SIZE 100
+#define LIST_SIZE 20
+
+struct pizza{
+   char name[LINE_SIZE];
+   float prize;
+};
+
+int read_item(struct pizza* item);
+int read_pizza_list(struct pizza* list);
+
+int compare_pizza(const void * left, const void * right) {
+    const struct pizza * a = (const struct pizza *) left;
+    const struct pizza * b = (const struct pizza *) right;
+    if (a->prize > b->prize){
+        return 1;
+    } 
+    else if (a->prize < b->prize){
+        return -1;
+    } 
+    else{
+        return 0;
+    }
+}
+
+
+int main(int argc, char *argv[]) {
+
+	struct pizza list[LIST_SIZE];
+	memset(list,0,LIST_SIZE*sizeof(struct pizza));
+
+	int counter = 0;
+	for (int i=0; i< LIST_SIZE; i++){
+	    struct pizza item;
+	    memset(&item,0,sizeof(struct pizza));
+	    // Nacitajte polozku do pomocnej premennej
+	    // Na nacitanie pouzite vlastny kod
+	    int r = read_item(&item);
+	    if (r){
+	        // Ak sa nacitanie podarilo, skopirujte polozku do pola
+	        memcpy(&list[i],&item,sizeof(struct pizza));
+	    // Spocitame uspesne nacitane polozky
+	    counter += 1;
+	    }
+	    else{
+	        // Ak sa nacitanie nepodarilo, nasli sme poslednu polozku
+	    // Prerusim nacitanie
+	        break;
+	    }
+	}
+	qsort (list, counter, sizeof(struct pizza), compare_pizza);
+	int i=0;
+	for (i = 0; i < counter; i++) {
+        printf("%s%.6f\n", list[i].name, list[i].prize);
+    }
+
+    return 0;
+
+
+}
+
+int read_item(struct pizza* item){
+	
+	char line[LINE_SIZE];
+	char line2[LINE_SIZE];
+	memset(line,0,LINE_SIZE);
+	memset(line2,0,LINE_SIZE);
+	while (1){
+		char *r = fgets(line,LINE_SIZE,stdin);
+		if(r != NULL && line[1] != 0){
+			int i=0;
+			//printf("%s",line);
+			while(line[i]!='\n' || line[i]!='\r'){
+				if(line[i]=='\n'){
+					//printf("Koniec n riadku\n");
+					break;
+				}
+				else if(line[i]=='\r'){
+					//printf("Koniec r riadku\n");
+					break;
+				}
+				else if((line[i]>='a' && line[i]<='z') || (line[i]>='A' && line[i]<='Z') || line[i]==' '){
+					//printf("%c\n",line[i]);
+					i++;
+				}
+				else{
+					//printf("NeplatnĂ˝ znak %c\n",line[i]);
+					return 0;
+				}
+			}
+			i=0;
+		    char *r2 = fgets(line2,LINE_SIZE,stdin);
+		    if(r2 != NULL && line2[1] != 0){
+		    	int i=0;
+		    	int comma=0;
+		    	int comma_number=0;
+				//printf("%s",line);
+				while(line2[i]!='\n' || line2[i]!='\r' || line2[i]!='\0'){
+					if(line2[i]=='\n'){
+						//printf("Koniec n riadku\n");
+						break;
+					}
+					else if(line2[i]=='\r'){
+						//printf("Koniec r riadku\n");
+						break;
+					}
+					else if(line2[i]=='\0'){
+						//printf("Koniec r riadku\n");
+						break;
+					}
+					else if((line2[i]>='0' && line2[i]<='9') || line2[i]=='.'){
+						//printf("%c\n",line[i]);
+						if(line2[i]=='.'){
+							comma++;
+						}
+						if(line2[i]!='.' && comma){
+							comma_number++;
+						}
+						i++;
+					}
+					else{
+						//printf("NeplatnĂ˝ znak %c\n",line[i]);
+						return 0;
+					}
+				}
+				i=0;
+				//printf("Comma %d\n",comma);
+				//printf("Comma number %d\n",comma_number);
+				if(comma!=1)return 0;
+				if(comma_number!=2)return 0;
+				float value = strtof(line2,NULL);
+				if (value == 0.0F){
+				   return 0;
+				}
+				item->prize = value;
+				strcpy(item->name, line);
+				return 1;
+			}
+			else{
+				return 0;	
+			}
+		}
+		else{
+		    return 0;
+		}
+	}
+}