微调

Co-authored-by: Copilot <copilot@github.com>

lab-3/lab3-1.cpp

@@ -20,19 +20,19 @@ int main()
     fread(grey, sizeof(unsigned char), H * W, f);
     fclose(f);
 
-    // 模板
+    // prewitt模板
     int tw = 3;
     int th = 3;
     int template1[9]={-1,0,1,-1,0,1,-1,0,1};
     int template2[9]={-1,-1,-1,0,0,0,1,1,1};
 
-    int i,j,k,l;
-    unsigned char *result_grey;
-    result_grey = new unsigned char[H * W];
+    int i,j,k,l;    // 中间变量
+    unsigned char *result;
+    result = new unsigned char[H * W];
 
     for (i = 0; i < H * W; i++)
     {
-        result_grey[i] = 255;
+        result[i] = 255;
     }
     for (i = th / 2; i < H - th / 2; i++)
     {
@@ -53,23 +53,27 @@ int main()
             sum=abs(sum1)+abs(sum2);
             if(sum>100)
             {
-                result_grey[i * W + j] = 0;
+                result[i * W + j] = 0;
             }
             else
             {
-                result_grey[i * W + j] = 255;
+                result[i * W + j] = 255;
             }
         }
     }
-    FILE *fnew;
-    fopen_s(&fnew, "./数据/prewitt.raw", "wb");
-    if (fnew)
+
+    // 将结果写入文件
+    FILE *fresult;
+    fopen_s(&fresult, "./数据/prewitt.raw", "wb");
+    if (fresult)
     {
-        fwrite(result_grey, sizeof(unsigned char), H * W, fnew);
+        fwrite(result, sizeof(unsigned char), H * W, fresult);
+        fclose(fresult);
     }
     else
     {
         cout << "创建文件失败" << endl;
         return 0;
     }
+    return 0;
 }