usaa24/cv2/program.c

#include <stdio.h>
#include <string.h>
#include <stdbool.h>
/// @. @ @
#define LINE_SIZE 100
#define LIST_SIZE 200

struct pizza
{
   char name[LINE_SIZE];
   float prize; 
};

int compare_pizza (struct pizza p1, struct pizza p2)
{
    if( p1.prize > p2.prize )
    {
        return 1;
    }  
 
    if( p1.prize < p2.prize )
    {
        return -1;
    }

    return strcmp(p1.name, p2.name);
}   
 int read_pizza_list(struct pizza* list)   
{   
    int counter = 0;
    for (int i=0; i< LIST_SIZE; i++)
    {
        struct pizza item;
        memset(&item,0,sizeof(struct pizza));
    
        int r = read_item(&item);
        if (r)
        {        
            memcpy(&list[i],&item,sizeof(struct pizza));         
            counter += 1;
        }
        else
        {
            break;
        }
    }

    return counter;
}
         
void sort_pizza_list(struct pizza* list, int n)
{
    bool sorted;
    struct pizza tmp;
    
    for(int k=0; k<n; k++)
    {
        sorted=true;
        for(int i=0; i<n-1-k; i++)
        {
            if(compare_pizza(list[i], list[i+1])>0)
            {
                tmp=list[i];
                list[i]=list[i+1];
                list[i+1]=tmp;
                sorted=false;
            }
        }
        if(sorted)
        {
          break;
        }
    }
}

int main()
{
    struct pizza list[LIST_SIZE];
    memset(list,0,LIST_SIZE*sizeof(struct pizza));

    int n=read_pizza_list(list);
    
    sort_pizza_list(&list,n);

    for(int k=0; k<n; k++)
       printf("%s%.6f\n",list[k].name, list[k].prize);

	return 0;
}

int read_item(struct pizza *r) 
{
    char*p;
    int st;
    do
    {
        p=fgets(r->name, 299, stdin);
    }while(p!=NULL && p[0]=='\n');

    if(p==NULL) {return 0;}

    st=scanf("%f", &r->prize);   

    if(st==1)   
        {return 1;}   
    else 
        {return 0;}   
}