diff --git a/Bresenham's Circle Drawing b/Bresenham's Circle Drawing
index 3e98c58..f843194 100644
--- a/Bresenham's Circle Drawing	
+++ b/Bresenham's Circle Drawing	
@@ -39,11 +39,10 @@ void circleBres(int xc, int yc, int r)
     }
 }
  
-int main()
+int main(void)
 {
     int xc = 50, yc = 50, r2 = 30;
     int gd = DETECT, gm;
     initgraph(&gd, &gm, "");  
     circleBres(xc, yc, r);   
-    return 0;
-}
\ No newline at end of file
+}
diff --git a/Bresenham's Line Drawing b/Bresenham's Line Drawing
index 3e5b6a7..07a79fc 100644
--- a/Bresenham's Line Drawing	
+++ b/Bresenham's Line Drawing	
@@ -30,7 +30,7 @@ void drawline(int x0, int y0, int x1, int y1)
     }
 }
  
-int main()
+int main(void)
 {
     int gdriver=DETECT, gmode, error, x0, y0, x1, y1;
     initgraph(&gdriver, &gmode, "c:\\turboc3\\bgi");
@@ -41,6 +41,5 @@ int main()
     printf("Enter co-ordinates of second point: ");
     scanf("%d%d", &x1, &y1);
     drawline(x0, y0, x1, y1);
- 
-    return 0;
-}
\ No newline at end of file
+
+}
diff --git a/DDA b/DDA
index 0c5fe2d..39a372b 100644
--- a/DDA
+++ b/DDA
@@ -33,12 +33,12 @@ void DDA(int X0, int Y0, int X1, int Y1)
     }
 }
  
-int main()
+int main(void)
 {
     int gd = DETECT, gm;
     initgraph (&gd, &gm, "");   
  
     int X0 = 2, Y0 = 2, X1 = 14, Y1 = 16;
     DDA(2, 2, 14, 16);
-    return 0;
-} 
\ No newline at end of file
+    
+} 
diff --git a/Mid-Point Circle Drawing b/Mid-Point Circle Drawing
index a82d860..3580120 100644
--- a/Mid-Point Circle Drawing	
+++ b/Mid-Point Circle Drawing	
@@ -53,9 +53,9 @@ void midPointCircleDraw(int x_centre, int y_centre, int r)
     } 
 }
  
-int main()
+int main(void)
 {
     // To draw a circle of radius 5 centred at (0, 0)
     midPointCircleDraw(0, 0, 5);
-    return 0;
-}
\ No newline at end of file
+
+}