diff --git a/.checkMatrix.c.un~ b/.checkMatrix.c.un~
deleted file mode 100644
index 3243d02..0000000
Binary files a/.checkMatrix.c.un~ and /dev/null differ
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..99cf5ff
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.*~
diff --git a/.outPut.c.un~ b/.outPut.c.un~
deleted file mode 100644
index 345b43e..0000000
Binary files a/.outPut.c.un~ and /dev/null differ
diff --git a/checkMatrix.c~ b/checkMatrix.c~
deleted file mode 100644
index 7decbfb..0000000
--- a/checkMatrix.c~
+++ /dev/null
@@ -1,67 +0,0 @@
-#include "myMatrix.h"
-
-int checkMatrix(int matrixArr[9][9], int isPrintInfo){
-  int rowCnt[9][10]={0};
-  int colCnt[9][10]={0};
-  int bloCnt[9][10]={0};
-  for(int i=0;i<9;i++){
-    for(int j=0;j<9;j++){
-      if(matrixArr[i][j]!=0){
-        rowCnt[i][matrixArr[i][j]]++;
-        if(rowCnt[i][matrixArr[i][j]]>1){
-          if(isPrintInfo){
-            printf("\nFalse:Invalid initial Sudoku matrix!\n");
-            printf("\nThe number %d in the row %d has been used!\n",matrixArr[i][j],i+1);
-          }
-          return 0;
-        }
-        colCnt[j][matrixArr[i][j]]++;
-        if(colCnt[j][matrixArr[i][j]]>1){
-          if(isPrintInfo){
-            printf("\nFalse:Invalid initial Sudoku matrix!\n");
-            printf("\nThe number %d in the col %d has been used!\n",matrixArr[i][j],j+1);
-          }
-          return 0;
-        }
-        bloCnt[i/3*3+j/3][matrixArr[i][j]]++;
-        if(bloCnt[i/3*3+j/3][matrixArr[i][j]]>1){
-          if(isPrintInfo){
-            printf("\nFalse:Invalid initial Sudoku matrix!\n");
-            printf("\nThe number %d in the block %d has been used!\n",matrixArr[i][j],i/3*3+j/3+1);
-          }
-          return 0;
-        }
-      }
-    }
-  }
-  if(isPrintInfo){
-    printf("\nTrue:Valid initial Sudoku matrix!\n");
-  }
-  return 1;
-}
-
-int main(){
-  int board0[9][9] = {{5, 3, 0, 0, 7, 0, 0, 0, 0},
-                      {6, 0, 0, 1, 9, 5, 0, 0, 0},
-                      {0, 9, 8, 0, 0, 0, 0, 6, 0},
-                      {8, 0, 0, 0, 6, 0, 0, 0, 3},
-                      {4, 0, 0, 8, 0, 3, 0, 0, 1},
-                      {7, 0, 0, 0, 2, 0, 0, 0, 6},
-                      {0, 6, 0, 0, 0, 0, 2, 8, 0},
-                      {0, 0, 0, 4, 1, 9, 0, 0, 5},
-                      {0, 0, 0, 0, 8, 0, 0, 7, 9}};
-  int board1[9][9] = {{8, 3, 0, 0, 7, 0, 0, 0, 0},
-                      {6, 0, 0, 1, 9, 5, 0, 0, 0},
-                      {0, 9, 8, 0, 0, 0, 0, 6, 0},
-                      {8, 0, 0, 0, 6, 0, 0, 0, 3},
-                      {4, 0, 0, 8, 0, 3, 0, 0, 1},
-                      {7, 0, 0, 0, 2, 0, 0, 0, 6},
-                      {0, 6, 0, 0, 0, 0, 2, 8, 0},
-                      {0, 0, 0, 4, 1, 9, 0, 0, 5},
-                      {0, 0, 0, 0, 8, 0, 0, 7, 9}};
-
-  printf("The original Sudoku matrix: \n");
-  matrixOutput(board1);
-  checkMatrix(board1,1);
-  return 0;
-}
diff --git a/outPut.c~ b/outPut.c~
deleted file mode 100644
index e10505f..0000000
--- a/outPut.c~
+++ /dev/null
@@ -1,38 +0,0 @@
-#include "myMatrix.h"
-
-void matrixOutput(int matrixArr[9][9])
-{
-  for (int i = 0; i < 9; i++)
-  {
-    if(i % 3 == 0)
-      printf("|-----------------------|\n");
-    for (int j = 0; j < 9; j++)
-    {
-      if(j % 3 == 0){
-        printf("| ");
-      }
-      printf("%d", matrixArr[i][j]);
-      if (j != 8)
-        printf(" ");
-      else
-        printf(" |");
-    }
-    printf("\n");
-  }
-  printf("|-----------------------|\n");
-}
-
-int main()
-{
-  int board[9][9] = {{5, 3, 4, 6, 7, 8, 9, 1, 2},
-                     {6, 7, 2, 1, 9, 5, 3, 4, 8},
-                     {1, 9, 8, 3, 4, 2, 5, 6, 7},
-                     {8, 5, 9, 7, 6, 1, 4, 2, 3},
-                     {4, 2, 6, 8, 5, 3, 7, 9, 1},
-                     {7, 1, 3, 9, 2, 4, 8, 5, 6},
-                     {9, 6, 1, 5, 3, 7, 2, 8, 4},
-                     {2, 8, 7, 4, 1, 9, 6, 3, 5},
-                     {3, 4, 5, 2, 8, 6, 1, 7, 9}};
-  matrixOutput(board);
-  return 0;
-}