Thread: Please help me with my C programming

Originally Posted by Bx2

thanks, that is better. now how can I get the error to loop back to ask the user the same question again? I know I need while, but am unsure how to implement it

You can use a while loop, where the condition is the user input. i.e., loop while user input is not equal to 'q' or whatever the user is supposed to enter to quite the calculations.

okay, so I've been messing around with the code, and I still cant get the hang of the do while loop. can anybody explain to me exactly what I'm doing wrong? also the total always equals $0. here is my current code:

Code:

main() { /*Written by Brandon Benyacar*/

	int area, labour, length, width, height=8, ceiling, setup=100, paint;
	float total, room;

{printf("Painting Cost Estimator \n Enter length of room in feet: \n"); /*prompt user to input values*/
scanf("%d", &length);
	printf("Enter width of room in feet: \n ");
	scanf("%d", &width);}
	
{{		printf("Please select grade of paint to use for walls: \n 1 - Basic \n 2 - Regular \n 3 - Premium \n"); /*assign cost to paint*/
		scanf ( "%d", &paint );
		
			if( paint == 1 ) 
				paint = 20;	
		else
			if( paint == 2 )
				paint = 30;
		else
			if( paint == 3 )
				paint = 40;
			
		else 
		printf ("Please select a grade of paint that actually exists!!! \n");}
			while ( paint <= 0 || paint > 3 );	}
				
				
		
	   
 
{ printf("Enter if ceiling is to be painted: \n 1 Yes \n 2 No \n");  /* Define whether ceiling is to be included in cost*/
	scanf("%d", &ceiling);
	while ( ceiling = 0 || ceiling > 2 );
		if( ceiling == 1 )
			ceiling = (length*width);
	else
		if( ceiling == 2 ) 
			ceiling = 0;
	else
		printf ("You made an incorrect selection. Please choose whether the ceiling is to be painted: \n");}
		
{area=(2*length*height)+(2*width*height)+ceiling;
printf("%d sq.feet \n", area);}

{labour=(area/200)*2;
room=((area)*paint)*2;
total=room+setup+labour;
printf ("Total: $%d \n", total);
}
}

keep in mind ive been messing around with the code so not every little detail will be exactly as intended.