Answer by user885074 for need an example on easyzlib (how to compress and decompress strings sent in the argv from command line Windows/Linux)

ezcompress and ezuncompress work on the file data directly which are represented as arrays of characters.

for (int i = 1; i < argc; i++) {    // open argument you want to compress    FILE *inputFile = fopen(argv[i], "r");    // get length of input    // http://stackoverflow.com/questions/238603/how-can-i-get-a-files-size-in-c    fseek(inputFile, 0, SEEK_END);    size_t inputSize = ftell(inputFile);    fseek(inputFile, 0, SEEK_SET);    unsigned char *inputBuffer = (unsigned char *)malloc(inputSize);    fread(inputBuffer, 1, inputSize, inputFile);    long outputSize = EZ_COMPRESSMAXDESTLENGTH(sz);    unsigned char *outputBuffer = (unsigned char *)malloc(outputSize);    int result = ezcompress(outputBuffer, &outputSize, inputBuffer, inputSize);    if (result != EZ_BUF_ERROR) {        // Do stuff with outputBuffer which has length outputSize    } else {        // Something went wrong    }    free(intputBuffer);    free(outputBuffer);}