Store replies somewhere else

store-replies.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <hiredis/hiredis.h>

void printReplies(char **replies, size_t len) {
    for (size_t i = 0; i < len; i++) {
        printf("[%zu]: '%s'\n", i, replies[i]);
    }
}

void freeReplies(char **replies, size_t len) {
    for (size_t i = 0; i < len; i++) {
        free(replies[i]);
    }
}

char *_strdup(char *s, size_t len) {
    char *r = malloc(len + 1);
    memcpy(r, s, len);
    r[len] = '\0';

    return r;
}

int main(int argc, const char **argv) {
    redisContext *c = redisConnect("127.0.0.1", 6379);
    char *replies[10] = {0};
    size_t num_replies = 0;
    redisReply *r;

    for (int i = 0; i < 10; i++) {
        r = (redisReply*)redisCommand(c, "PING %d", i);
        if (r) {
            if (r->type == REDIS_REPLY_STRING) {
                // I'm storing `r->str` into another structure that I use later
                // so we must duplicate this memory since `freeReplyObject` will
                // free it below.
                replies[i] = _strdup(r->str, r->len);
                num_replies++;
            }

            freeReplyObject(r);
        }
    }

    printReplies(replies, num_replies);

    // We also must remember to free our duplicated memory
    freeReplies(replies, num_replies);

    redisFree(c);
}