i have a problem when i use hash_set

[lixiaocan]

sorry，i'm a newbie，Who can tell me the problem of following code？
//code

int main(int args,char *argv[])
{
    hash_t *hash_tab = NULL;
    char k[32] = {0};
    char cont[8] = {0};
    int value = 0;
    hash_tab = hash_new();
    do {
        printf("input key\n");
        scanf("%s",k);
        printf("input value\n");
        scanf("%d",&value);
        if(!hash_has(hash_tab,k))
            hash_set(hash_tab,k,&value);
        printf("conitinue add key? [y|n]\n");
        scanf("%s",cont);
    }while(!strcasecmp("y",cont));
    hash_each(hash_tab, {
                printf("%s: %d\n", key, *(int *) val);
                });
    hash_free(hash_tab);
}

//exe:
./test
input key
li
input value
2
conitinue add key? [y|n]
y
input key
yan
input value
3
conitinue add key? [y|n]
n
yan: 3
yan: 3