C program to move a car

Program in c using graphics move a car. A car is made using two rectangles and two circles which act as tyres of car. A for loop is used to move the car forward by changing the rectangle and circle coordinates and erasing the previous contents on screen using clearviewport, you can also use cleardevice. Speed of car can be adjusted using delay function, more the delay lesser will be the speed or lesser the delay your car will move fast. In this program color of the car also keeps on changing, this is accomplished by incrementing the color value by one each time in for loop, you can also use random function for this purpose. Before you see a car moving you will be asked to press a key.

C programming code
#include <graphics.h>
#include <dos.h>
#include <conio.h>

main()
{
   int i, j = 0, gd = DETECT, gm;

   initgraph(&gd,&gm,"C:\\TC\\BGI");

   settextstyle(DEFAULT_FONT,HORIZ_DIR,2);
   outtextxy(25,240,"Press any key to view the moving car");

   getch();
   setviewport(0,0,639,440,1);

   for( i = 0 ; i <= 420 ; i = i + 10, j++ )
   {
      rectangle(50+i,275,150+i,400);
      rectangle(150+i,350,200+i,400);
      circle(75+i,410,10);
      circle(175+i,410,10);
      setcolor(j);
      delay(100);

      if( i == 420 )
         break;

      clearviewport();
   }

   getch();
   closegraph();
   return 0;
}

Comments

Post a Comment

Popular posts from this blog

Difference between asterisk and ampersand operators in c

Address Operator (& - Ampersand): Returns address of the given variable.  Consider the following example, int *ptr, var = 10; ptr = &var; ptr = &var sets the address of the variable var to pointer ptr.  & is also called as reference operator. Let us try to understand the purpose of reference operator using the following example program.   #include <stdio.h>   int main() {         int var = 10, *ptr;         /* assigning address of variable var to pointer ptr */         ptr = &var;         /* printing the address of the variable var */         printf("Address of var is 0x%x\n", &var);         /* printing the value of pointer ptr */         printf("Value of ptr is 0x%x\n", ptr);         return 0;   }   Output:   jp@jp-VirtualBox:~/$ ./a.out   Address of var is 0xbfdf202c   Value of ptr is 0xbfdf202c Indirection Operator('*' - asterisk): The dereference operator is an unary operator which returns the value of
Read more

kbhit in c

kbhit in c: kbhit function is used to determine if a key has been pressed or not. To use kbhit function in your program you should include the header file "conio.h". If a key has been pressed then it returns a non zero value otherwise returns zero. Declaration : int kbhit(); C programming code for kbhit #include <stdio.h> #include <conio.h> main() {    while (!kbhit())       printf("You haven't pressed a key.\n");    return 0; } As long as in the above program user doesn't presses a key kbhit() return zero and (!0) i.e. 1 the condition in while loop is true and "You haven't pressed a key." will be printed again and again. As a key is pressed from the keyboard the condition in while loop become false as now kbhit() will return a non-zero value and ( !(non-zero) = 0), so the control will come out of the while loop.
Read more