Switch statement executes case 2 even after break - c

Question

When case 1, the program executes the code intended but then when it asks you if you want to calculate volume again if you pick yes it just executes case 2. I'm not sure what's wrong. How can I get it to only execute case 1 unless the you pick 2 in the menu?
#include <stdio.h>
#include <stdlib.h>
int main()
{
float menu1, opt1, opt2, opt3, opt4, t;
int td;
printf("Enter: ");
scanf("%d",&td);
switch(td) {
case 1:
printf("Enter a, b, c, and h of the triangular prism in meters\n\n");
printf("a ");
scanf("%f", &opt1);
printf("b ");
scanf("%f", &opt2);
printf("c ");
scanf("%f", &opt3);
printf("h ");
scanf("%f", &opt4);
printf("\nWould you like to make another Volume calculation (1 for Yes, 2 for No)?");
scanf("%f", &menu1);
if (menu1 == 2) {
t = 0;
break;
}
if (menu1 < 1 || menu1 > 2) {
printf("\n\nUser choice must be between 1 and 2!\n\n");
printf("Would you like to make another Volume calculation (1 for Yes, 2 for No)?");
scanf("%f", &menu1);
if(menu1 == 2) {
t = 0;
break;
}
}
case 2:
printf("Enter a and h of the triangular pyramid\n\n");
printf("a ");
scanf("%f", &opt1);
printf("h ");
scanf("%f", &opt2);
printf("\nWould you like to make another Volume calculation (1 for Yes, 2 for No)?");
scanf("%f", &menu1);
if (menu1 == 2) {
t = 0;
break;
}
if (menu1 < 1 || menu1 > 2) {
printf("\n\nUser choice must be between 1 and 2!\n\n");
printf("Would you like to make another Volume calculation (1 for Yes, 2 for No)?");
scanf("%f", &menu1);
if(menu1 == 2) {
t = 0;
break;
}
}
}
}

Answer 1

Your break statements [for case 1:] are only inside if blocks. If neither if is true, you get the fall through.
Here is your original:
case 1:
// ...
if (menu1 < 1 || (menu1 > 2) {
// ...
if (menu1 == 2) {
t = 0;
break;
}
}
// BUG: there should be a break here
case 2:
// ...
printf("Enter a and h of the triangular pyramid\n\n");
printf("a ");
// ...
Here is the fixed code:
case 1:
// ...
if (menu1 < 1 || (menu1 > 2) {
// ...
if (menu1 == 2) {
t = 0;
break;
}
}
break; // FIX: this is your _missing_ break statement
case 2:
// ...
printf("Enter a and h of the triangular pyramid\n\n");
printf("a ");
// ...