program

cv2/program.c

@@ -0,0 +1,79 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define LINESIZE 100
+
+struct pizza{
+    char name[LINESIZE];
+    float prize;
+};
+
+int read_pizza(struct pizza* item){
+   
+    char line1[LINESIZE];
+    char line2[LINESIZE];
+ 
+    memset(line1, 0, LINESIZE);
+    memset(line2, 0, LINESIZE);
+    char *l1 = fgets(line1,LINESIZE,stdin);
+    char *l2 = fgets(line2,LINESIZE,stdin);
+
+    //line1[strlen(line1)-1] = '\0';
+    //line2[strlen(line2)-1] = '\0';
+
+    float value = strtof(line2, &l2);
+    if(value == 0.0F){
+       return 0;
+    }
+    if(l1 != NULL && line1[1] != 0){
+        item->prize = value;
+        strcpy(item->name, line1);
+        return 1;   
+    }   
+}
+int comparename(const void *a, const void *b){
+    
+    struct pizza* pizza_a = (void*) a;
+    struct pizza* pizza_b = (void*) b;
+
+    return strcmp(pizza_a->name, pizza_b->name);
+    
+}
+int compareprize(const void *a, const void *b){
+    
+    struct pizza* pizza_a = (void*) a;
+    struct pizza* pizza_b = (void*) b;
+       
+    float r = (pizza_a->prize > pizza_b->prize) - (pizza_a->prize < pizza_b->prize);
+    return r;
+}
+
+int main(){
+    
+    struct pizza jedalny_listok[100];
+    memset(jedalny_listok, 0 , sizeof(struct pizza)*100);
+    
+    struct pizza item;
+    int counter = 0;   
+    
+    while(stdin, read_pizza(&item)){
+        strcpy(jedalny_listok[counter].name, item.name);
+        jedalny_listok[counter].prize = item.prize;
+        counter++;
+    }
+   
+    qsort(jedalny_listok, counter, sizeof(struct pizza), compareprize);
+    
+    //qsort(jedalny_listok, counter, sizeof(struct pizza), comparename);    
+
+    int i = 0;
+    for(i = 0; i < counter; i++){
+        printf("%s", jedalny_listok[i].name);
+        printf("%f", jedalny_listok[i].prize);
+        printf("\n");
+    }
+ 
+
+    return 0;
+}