diff --git a/SLS_C/Makefile b/SLS_C/Makefile
index fe8affe..b58051b 100644
--- a/SLS_C/Makefile
+++ b/SLS_C/Makefile
@@ -5,6 +5,9 @@ CFLAGS ?= -std=c99 -Wall -Wextra -Werror -g -Iinclude -MMD -MP
 LDFLAGS ?=
 CTESTFLAGS ?= -std=c99 -Wall -Wextra -Wno-unused-function -Werror -g -O0 -Iinclude -MMD -MP
 
+GIT_COMMIT := $(shell git describe --always --dirty --abbrev=7)
+CFLAGS += -DGIT_COMMIT_HASH="\"$(GIT_COMMIT)\""
+
 SRCDIR := src
 OBJDIR := obj
 BINDIR := bin
diff --git a/SLS_C/include/sls/main.h b/SLS_C/include/sls/main.h
new file mode 100644
index 0000000..819596c
--- /dev/null
+++ b/SLS_C/include/sls/main.h
@@ -0,0 +1,34 @@
+// Kyler Olsen
+// YREA SLS
+// Main Header
+// November 2025
+
+#ifndef SLS_MAIN_H
+#define SLS_MAIN_H
+
+#define SLS_NAME "SLS_C"
+#define SLS_VER "a.0.0"
+
+#ifndef GIT_COMMIT_HASH
+    #define GIT_COMMIT_HASH "UNKNOWN"
+#endif
+
+#if defined(__GNUC__)
+    #define COMPILER_NAME "GCC"
+    #define COMPILER_VER __GNUC__
+
+#elif defined(__clang__)
+    #define COMPILER_NAME "Clang"
+    #define COMPILER_VER __clang_major__
+
+#elif defined(_MSC_VER)
+    #define COMPILER_NAME "MSVC"
+    #define COMPILER_VER _MSC_VER
+
+#else
+    #define COMPILER_NAME "Unknown compiler"
+    #define COMPILER_VER 0
+#endif
+
+
+#endif // SLS_MAIN_H
diff --git a/SLS_C/src/main.c b/SLS_C/src/main.c
index 64fbefa..e4bf89f 100644
--- a/SLS_C/src/main.c
+++ b/SLS_C/src/main.c
@@ -4,8 +4,33 @@
 // October 2025
 
 #include <stdio.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "sls/main.h"
+#include "sls/bool.h"
+#include "sls/repl.h"
 
 int main(int argc, char *argv[]) {
-    printf("Hello, world!\n");
-    return 0;
+    Boolean version = FALSE;
+    Boolean file = FALSE;
+    char *filename = NULL;
+
+    (void)file;
+    (void)filename;
+
+    for (int i = 0; i < argc; i++) {
+        if (strcmp(argv[i], "--version") == 0) version = TRUE;
+        if (strcmp(argv[i], "-v") == 0) version = TRUE;
+    }
+
+    if (version) {
+        printf("YREA SLS (" SLS_NAME ") " SLS_VER " (" GIT_COMMIT_HASH ")\n");
+        printf("Compiled with " COMPILER_NAME " %d at " __DATE__ " " __TIME__ "\n", COMPILER_VER);
+        return 0;
+    } else if (file) {
+        return 1;
+    } else {
+        return repl(0, NULL);
+    }
 }
diff --git a/SLS_C/src/repl.c b/SLS_C/src/repl.c
index b612078..152c5da 100644
--- a/SLS_C/src/repl.c
+++ b/SLS_C/src/repl.c
@@ -4,3 +4,10 @@
 // November 2025
 
 #include "sls/repl.h"
+
+int repl(int argc, char *argv[]) {
+    (void)argc;
+    (void)argv;
+
+    return 1;
+}