Thread: switch won't break

i am writing a program for class and a switch i have in it won't break, but only one case won't break when i enter the sentinel value it goes back to the menu but the other case exits when the sentinel is entered and the default case works properly

Code:

switch(choice){
		case 1:
			printf("Enter the length of the base(9999 to quit):\n");
			scanf("%lf", &base);
			while (base != 9999){
				printf("Enter the length of the height:\n");
				scanf("%lf", &height);
				while(height < 0 || base < 0 ){
					printf("Invalid input!\n");
					printf("Enter the length of the base:\n");
					scanf("%lf", &base);
					printf("Enter the length of the height:\n");
					scanf("%lf", &height);
				area = .5 * base * height;
				printf("The area of the triangle is %.2lf\n", area);

				printf("Enter the length of the base(9999 to quit):\n");
				scanf("%lf", &base);
				}
			}
			break;
		case 2:
			printf("Enter the length of side 1(9999 to quit):\n");
			scanf("%lf", &side1);
			while (side1 != 9999){
				printf("Enter the length of side 2:\n");
				scanf("%lf", &side2);
				printf("Enter the length of side 3:\n");
				scanf("%lf", &side3);
				while(side1 < 0 || side2 < 0 || side3 < 0){
					printf("Invalid input!\n");
					printf("Enter the length of side 1:\n");
					scanf("%lf", &side1);
					printf("Enter the length of side 2:\n");
					scanf("%lf", &side2);
					printf("Enter the length of side 3:\n");
					scanf("%lf", &side3);
				}
				perimeter = side1 + side2 + side3;
				printf("The perimeter of the triangle is %.2lf\n", perimeter);

				printf("Enter the length of side 1(9999 to quit):\n");
				scanf("%lf", &side1);
			}
			break;
		default: printf("Invalid input!");
			break;}
			break;

the last break at the end outside of the braces is because the switch is inside a case of another switch
plz help me if you can im new at this

nvm i figured it out but i don't know how to delete my thread i am also new to posting on forums

What was the answer? I'm curious. I can't see it readily. Something to do with buffering non-numeric input into scanf() maybe?

no,
i didn't post the whole code and i have a do while loop in there and in the condition i put the wrong value for the sentinel value so i changed it and it worked its kinda confusing cuz i have one sentinel value with a few different variables that it could be assigned to and all of them were right except the one that is used in the one case that kept looping so it would go through the do while loop then it would break and since the case values were the same as the first time they were input it would just skip to that one case everytime so it would seem to not break but it would then loop cuz the sentinel was wrong lol kinda confusing so im not 100% thats what happened bt it seems right

so you wouldn't have been able to help cuz the actual problem wasn't shown

Code:

switch(choice)
{
		case 1:
                                       {
			printf("Enter the length of the base(9999 to quit):\n");
			scanf("%lf", &base);
			while (base != 9999)
                                                                {
				printf("Enter the length of the height:\n");
				scanf("%lf", &height);
				while(height < 0 || base < 0 )
                                                                                  {
					printf("Invalid input!\n");
					printf("Enter the length of the base:\n");
					scanf("%lf", &base);
					printf("Enter the length of the height:\n");
					scanf("%lf", &height);
				area = .5 * base * height;
				printf("The area of the triangle is %.2lf\n", area);

				printf("Enter the length of the base(9999 to quit):\n");
				scanf("%lf", &base);
				}
			}
                                       }
			break;
		case 2:
                                          {
			printf("Enter the length of side 1(9999 to quit):\n");
			scanf("%lf", &side1);
			while (side1 != 9999)
                                                            {
				printf("Enter the length of side 2:\n");
				scanf("%lf", &side2);
				printf("Enter the length of side 3:\n");
				scanf("%lf", &side3);
				while(side1 < 0 || side2 < 0 || side3 < 0)
                                                                              {
					printf("Invalid input!\n");
					printf("Enter the length of side 1:\n");
					scanf("%lf", &side1);
					printf("Enter the length of side 2:\n");
					scanf("%lf", &side2);
					printf("Enter the length of side 3:\n");
					scanf("%lf", &side3);
				           }
				perimeter = side1 + side2 + side3;
				printf("The perimeter of the triangle is %.2lf\n", perimeter);

				printf("Enter the length of side 1(9999 to quit):\n");
				scanf("%lf", &side1);
			}
                                 }
			break;
                                            
		default: 
                                               {
                                                   printf("Invalid input!");
			}
}

can u try this one....

my indention is from visual c++ express
it automatically indents like that
plus i select all then do ctrl+k, ctrl+f and that indents it
so the indention is not my fault sry

i could probably use more spacing though my code is kinda cramped

I usually set my tabs to the tab character, but set the number of spaces per tab down to two. As far as posting stuff online, I have a separate program that takes clipboard data and converts tabs to multi-spaces.

As a fan of the arrow keys (which my gut tells me Elysia is one too), I just dislike using spaces over tabs.