diff --git a/src/main/c/sudoku.c b/src/main/c/sudoku.c
index dac8629..4329efc 100644
--- a/src/main/c/sudoku.c
+++ b/src/main/c/sudoku.c
@@ -1,6 +1,3 @@
-
-
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
@@ -59,7 +56,21 @@ void availableLevelsFunction(int difficulty) {
 void selectLevel(int grid[SIZE][SIZE]) {
     int level = 0;
     printf("\nSelect a level:\n");
-    
+    while (true){
+    char level_select[10];
+        scanf("%s", level_select);
+
+
+        level = level_select[0] - '0'; // Convert the first character to an integer
+
+        if ((level >= 1 && level <= 3) && level_select[1] == '\0') {
+            printf("Input is correct");
+            break;
+        } else {
+            printf("Invalid input. Please enter a number between 1 and 3.\n");
+           
+        }
+    }
     
     
 }