Avance Pregunta 2 guía 4, C (gcc)

Avance Pregunta 2 guía 4

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>

typedef char cadena[256];
typedef struct
{
    char mail[321];
    char domain[256];
    
}domains;

// -----------------Prototypes----------------------

void findDomain ( char *mail, char *domain);
int compareDomains( const void *, const void * );
void lowerCase( char *);

// ---------------Main Program-----------------------
int main(void)
{
    domains typeDomain[10000];
    char mail[321];
    int i = 0;
    int total;

// --------------------------Input----------------------
    
    while ( i < 10000)
    {
        scanf("%320s", typeDomain[i].mail);
        if ( strcmp(typeDomain[i].mail, "FIN") == 0)
            break;
        i++;
    }
    
    // -----------------------Process-----------------------
    
    total = i;
    printf("total: %d.\n\n", total);
    for (i = 0 ; i < total ; i++)
    {
        findDomain(typeDomain[i].mail, typeDomain[i].domain);
    }
    
    for (i = 0 ; i < total  ; i++)
        lowerCase(typeDomain[i].domain);
    
    
    for (i = 0 ; i < total  ; i++)
    {
        //printf("XX\n");
        printf("%s\n", typeDomain[i].domain);
    }
        
    
    /*
    qsort(typeDomain, total, sizeof(cadena), compareDomains);
    
    printf("\nELEMENTOS ORDENADOS\n\n");
    for (i = 0 ; i < total ; i++)
        printf("%s\n", typeDomain[i].domain);*/
        
    return 0;
}

/* -------------------------Procedimiento findDomain-------------------------------
 * Propósito: encontrar el dominio de un correo electrónico. Ejemplo: 
 * pedro@hotmail.com, el dominio es: hotmail.com 
 * 
 */

void findDomain ( char *mail, char *domain)
{
    char *pointer;
    pointer = mail;

if ( pointer = strchr(mail, '@') )
        strcpy(domain, pointer + 1);
}

int compareDomains( const void *pivot, const void *element )
{
    char *ptrPivot = (char *) pivot;
    char *ptrElement = (char *) element;
    return strcmp(ptrPivot, ptrElement);
}

void lowerCase( char *domain)
{
    while ( *domain != '\0')
    {
        if ( isupper( *domain ) )
            *domain = tolower(*domain);
        domain ++;
    }
}


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