diff --git a/table.c b/table.c
index 76fa009..c01cb9b 100644
--- a/table.c
+++ b/table.c
@@ -1,2 +1,31 @@
 #include <table.h>
+#include <stdlib.h>
 
+
+/*At the start of the execution : the whole array is empty*/
+symbolTable = malloc(sizeof(symbol) * START_TABLE_SIZE)
+currentIndex = 0;
+maxIndex = START_TABLE_SIZE;
+
+/*Checks for the length of the array and reallocates if necessary*/
+void checkArraySanity(){
+    if (currentIndex == maxIndex){
+        reallocateArray(maxIndex * 2);
+    } else {
+        if (currentIndex < maxIndex / 2){
+            reallocateArray(maxIndex / 2);
+        }
+    }
+}
+
+void reallocateArray(int size){
+    Symbol* newSymbolTable = malloc(sizeof (symbol) * size); // we double the size of the array
+    Symbol* oldSymbolTable = symbolTable; // we double the size of the array
+    free(oldSymbolTable);
+
+    for(int i = 0; i < currentIndex; i++){
+        newSymbolTable[i] = oldSymbolTable[i];
+    }
+
+    symbolTable = newSymbolTable;
+}
\ No newline at end of file
diff --git a/table.h b/table.h
index bb4d3be..acd9170 100644
--- a/table.h
+++ b/table.h
@@ -1,6 +1,17 @@
+#ifndef TABLE_H
+#define TABLE_H
+
 #include <stdio.h>
 #include <stdbool.h>
 
+/*defined constants*/
+#define START_TABLE_SIZE 128;
+
+/*indexes in the array*/
+static int currentIndex;
+static int maxIndex;
+static symbol* symbolTable;
+
 enum enumVarType {INT, FLOAT, CHAR, STRING};
 
 struct symbol {
@@ -11,4 +22,7 @@ struct symbol {
     int deep;
 };
 
+void reallocateArray(int size);
+void checkArraySanity();
 
+#endif