diff --git a/main.c b/main.c
index 06aa590..42dc2d3 100644
--- a/main.c
+++ b/main.c
@@ -12,12 +12,12 @@ int main()
     printf("\n\n  1. Hypotenuse calculator");
     printf("\n  2. Quadratic formula calculator");
     printf("\n  3. Area of a circle");
-    printf("\n  4. Build a matrix");
-    printf("\n  5. Matrix determinant");
-    printf("\n  6. Matrix addition");
-    printf("\n  7. Matrix multiplication");
-    printf("\n  8. Scalar matrix multiplication");
-    printf("\n\n Enter your choice here:_____");
+    printf("\n  4. * Matrix determinant *");
+    printf("\n  5. Matrix addition");
+    printf("\n  6. * Matrix multiplication *");
+    printf("\n  7. Scalar matrix multiplication");
+    printf("\n\n * Stared entries are not fully programmed.");
+    printf("\n Enter your choice here:_____");
     printf("\033[D");
     printf("\033[D");
     printf("\033[D");
@@ -81,54 +81,32 @@ int main()
 
     case 4:
 
-        system("clear");
-        // printf("\n ~~ Build a matrix ~~\n\n");
-        // int numRows;
-        // int numColumns;
-        // printf("\nPlease enter the number of rows: ");
-        // scanf("%d", &numRows);
-        // printf("\nPlease enter the number of columns: ");
-        // scanf("%d", &numColumns);
-        // buildMatrix(numRows, numColumns);
-
-        break;
-        //TODO: replace this
-
-    case 5:
-
         system("clear");
         printf("\n ~~ Matrix determinant ~~\n\n");
 
         break;
 
-    case 6:
+    case 5:
 
         system("clear");
         printf("\n ~~ Matrix addition ~~\n\n");
-        // int numRows;
-        // int numColumns;
-        // printf("\nPlease enter the number of rows: ");
-        // scanf("%d", &numRows);
-        // printf("\nPlease enter the number of columns: ");
-        // scanf("%d", &numColumns);
 
-        // printMatrix(numRows, numColumns, matrix1);
-        // printf("\n");
-        // printMatrix(numRows, numColumns, matrix2);
-        // printf("\n");
-
-        // addMatrices(numRows, numColumns, matrix1, matrix2, sumMatrix);
-
-        // printMatrix(numRows, numColumns, sumMatrix);
+        int Rows;
+        int Columns;
+        printf("\nPlease enter the number of rows: ");
+        scanf("%d", &Rows);
+        printf("\nPlease enter the number of columns: ");
+        scanf("%d", &Columns);
+        matrixAddition(Rows, Columns);
 
         break;
-    case 7:
+    case 6:
 
         system("clear");
         printf("\n ~~ Matrix multiplication ~~\n\n");
 
         break;
-    case 8:
+    case 7:
 
         system("clear");
         printf("\n ~~ Scalar matrix multiplication ~~\n\n");