我正在尝试遍历我的哈希表并将键和值存储到结构数组中。我不断收到段错误。我猜是由于基于指针的结构。
当我应该使用指向结构的指针和结构数组时,我仍然感到困惑。
编辑:让它工作。请参阅下面的答案。
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <glib.h>
typedef struct st {
char *key;
char *str;
int len;
} MyStruct;
int z = 0;
static void hash2struct (gpointer key, gpointer value, gpointer data) {
MyStruct **s = data;
gchar *k = (gchar *) key;
gchar *h = (gchar *) value;
s[z]->key = strdup(k);
s[z]->str =strdup(h);
z++;
}
int main(int argc, char *argv[]){
int i;
GHashTable *hash = g_hash_table_new(g_str_hash, g_str_equal);
g_hash_table_insert(hash, "Virginia", "Richmond");
g_hash_table_insert(hash, "Texas", "Austin");
g_hash_table_insert(hash, "Ohio", "Columbus");
MyStruct **s = malloc(sizeof(MyStruct) * 3);
for(i = 0; i < 3; i++) {
s[i] = malloc(sizeof(MyStruct));
}
g_hash_table_foreach(hash, hash2struct, s);
for(i = 0; i < 3; i++)
printf("%s %s\n", s[i]->str, s[i]->key);
for(i = 0; i < 3; i++) {
free(s[i]->str);
free(s[i]->key);
free(s[i]);
}
free(s);
g_hash_table_destroy(hash);
return 0;
}