linux zlib安装目录

sudo apt-get update
sudo apt-get install zlib1g-dev

sudo yum install zlib-devel

sudo apt-get update
sudo apt-get install zlib1g-dev

gcc my_program.c -o my_program -lz

#include <stdio.h>
#include <string.h>
#include <zlib.h>

void compress_data(const char *input, size_t input_len, unsigned char **output, size_t *output_len) {
    *output_len = compressBound(input_len);
    *output = (unsigned char *)malloc(*output_len);
    compress2(*output, output_len, (const Bytef *)input, input_len, Z_DEFAULT_COMPRESSION);
}

void decompress_data(const unsigned char *input, size_t input_len, unsigned char **output, size_t *output_len) {
    uLongf dest_len = 1024;
    *output = (unsigned char *)malloc(dest_len);
    *output_len = dest_len;
    uncompress(*output, &dest_len, input, input_len);
}

int main() {
    const char *original_data = "Hello, World!";
    size_t original_len = strlen(original_data) + 1;

    unsigned char *compressed_data;
    size_t compressed_len;
    compress_data(original_data, original_len, &compressed_data, &compressed_len);

    unsigned char *decompressed_data;
    size_t decompressed_len;
    decompress_data(compressed_data, compressed_len, &decompressed_data, &decompressed_len);

    printf("Original: %s\n", original_data);
    printf("Decompressed: %s\n", decompressed_data);

    free(compressed_data);
    free(decompressed_data);

    return 0;
}

gcc -o zlib_example zlib_example.c -lz
./zlib_example