diff --git a/libs/string.h b/libs/string.h
index dde6c47..bd24e24 100644
--- a/libs/string.h
+++ b/libs/string.h
@@ -1,12 +1,23 @@
 #include <stdlib.h>
 #include <string.h>
+#include <stdio.h>
 
+// -------------------------------------
+// BASE - String and init of this
+// -------------------------------------
 typedef char* string;
 string strInit(char* s) {
 	string str = malloc(strlen(s) * sizeof(char));
 	strcpy(str, s);
 	return str;
 }
+// -------------- END ------------------
+
+
+
+// -------------------------------------
+// FUNCTION - basic operations
+// -------------------------------------
 void strAdd(string* s, char* str_new) {
 	*s = realloc(*s, strlen(*s) + strlen(str_new)*sizeof(char));
 	strcat(*s, str_new);
@@ -18,3 +29,26 @@ void strSet(string* s, char* str_new) {
 void strCopy(string* s1, string* s2) {
 	strcpy(*s2, *s1);
 }
+// -------------- END ------------------
+
+
+
+// -------------------------------------
+// CONVERT - different convert to str
+// -------------------------------------
+char* int2Str(int* num) {
+    char* buffer = malloc(12);
+    sprintf(buffer, "%d", *num);
+    return buffer;
+}
+char* float2Str(float* num) {
+    char* buffer = malloc(12);
+    sprintf(buffer, "%f", *num);
+    return buffer;
+}
+char* double2Str(double* num) {
+    char* buffer = malloc(12);
+    sprintf(buffer, "%f", *num);
+    return buffer;
+}
+// -------------- END ------------------