diff --git a/sk1/main.c b/sk1/main.c
new file mode 100644
index 0000000..8afb615
--- /dev/null
+++ b/sk1/main.c
@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "compressor.h"
+
+void print_help() {
+    printf("Usage:\n");
+    printf("  ./compressor -c1 infile outfile   Compress using algorithm 1 (Huffman)\n");
+    printf("  ./compressor -d1 infile outfile   Decompress using algorithm 1 (Huffman)\n");
+    printf("  ./compressor -c2 infile outfile   Compress using algorithm 2 (RLE)\n");
+    printf("  ./compressor -d2 infile outfile   Decompress using algorithm 2 (RLE)\n");
+    printf("  ./compressor -h                   Show this help message\n");
+}
+
+int main(int argc, char* argv[]) {
+    if (argc < 2) {
+        print_help();
+        return 1;
+    }
+
+    if (strcmp(argv[1], "-h") == 0) {
+        print_help();
+        return 0;
+    }
+
+    if (argc != 4) {
+        fprintf(stderr, "Error: Invalid number of arguments.\n");
+        print_help();
+        return 1;
+    }
+
+    const char* mode = argv[1];
+    const char* infile = argv[2];
+    const char* outfile = argv[3];
+
+    if (strcmp(mode, "-c1") == 0) {
+        compress_1(infile, outfile);
+    } else if (strcmp(mode, "-d1") == 0) {
+        decompress_1(infile, outfile);
+    } else if (strcmp(mode, "-c2") == 0) {
+        compress_2(infile, outfile);
+    } else if (strcmp(mode, "-d2") == 0) {
+        decompress_2(infile, outfile);
+    } else {
+        fprintf(stderr, "Error: Unknown mode '%s'.\n", mode);
+        print_help();
+        return 1;
+    }
+
+    return 0;
+}