Need desperate C++ help, FH-OT, you've got 50 minutes!

[Himse]

And this is the reason you had to sell your DaoC account for sex!

ahaha by3333

 

[Manisch Depressiv]

Nothing of it is C++ though as it should be, so either change topic to "Need desperate C help" or give C++ code .

 

[Aoami]

const int RAINY = 1;
const int WINDY = 2;
const int SUNNY = 3;
const int TRUE = 1;
const int FALSE = 0;

int weather, take_brolly, take_overcoat, take_sunglasses;
take_brolly = take_overcoat = take_sunglasses = FALSE;

if (weather == RAINY)
 take_brolly = TRUE;
else if (weather == WINDY)
 take_overcoat = TRUE;
else if (weather == SUNNY)
 take_sunglasses = TRUE;
else
 printf("ERROR: unknown type of weather\n");

Anyone want to convert this to the equivalent switch construct?

 

[Syri]

c++ switch - Google Search

not doing everything for ya

 

[Aoami]

c++ switch - Google Search

not doing everything for ya

 

[crispy]

Oh i can code it in fortran if you want it!

 

[Aoami]

#include<stdio.h>

void main()

{
int CarAge, EngineSize, Convictions;

printf("Please enter the age of your Car, followed by it's engine size and finally the amount of convictions you have had: \n");
scanf("%i%i%i" &CarAge, &EngineSize, &Convictions);


   if (CarAge >= 15 && EngineSize >= 2000 && Convictions >= 3)
	   printf("Policy loaded by 45%");
   else if (CarAge >= 15 && EngineSize >= 2000 && Convictions < 3)
       printf("Policy loaded by 20%");
   else if (CarAge < 15 && EngineSize < 2000 && Convictions < 3)
       printf("Policy loaded by 0%");

}

omg what is wrong with this code... nothing. error C2296: '&' : illegal, left operand has type 'const char [7]' gays

 

[crispy]

Maybe its because the data you type in is stored as chars and not integers. Try casting the input from from chars to integers.

I have no C++ experience, so its just my two cents from a java perspective

 

[Aoami]

sorted, missed a comma!

 

[Aoami]

c++ switch - Google Search

not doing everything for ya

i can't do it... basically because i've no idea what the original code is trying to do.

 

[Syri]

ok, the switch function is designed to check for several specific possible entries for a variable, for example, choosing options from a menu.
So for example, we could have a program where the user is prompted to enter a number between 1 and 5, and that is stored in the variable iMenuSelection.
Instead of writing an if statement for each option, we can just use switch, and write a case for each one, which is much easier.
the if statement version would be something like

if (iMenuSelection == 1)
{
   printf("One selected");
}
else if (iMenuSelection == 2)
{
   printf("Two selected");
}
else if (iMenuSelection == 3)
{
   printf("Three selected");
}
else if (iMenuSelection == 4)
{
   printf("Four selected");
}
else if (iMenuSelection == 5)
{
   printf("Five selected");
}
else
{
   printf("You didn't enter a valid number");
}

For a five option one, with just a single line for each option, it's not THAT bad, but imagine expanding the scope, and the actions taken... it'd get messy quick. Therefore, the switch version below is better.

switch (iMenuSelection)  // start the switch, using the variable
{
   case 1:  // if it's equal to 1...
   {
      printf("One selected");
   {
   break;
   case 2:  // if it's equal to 2...
   {
      printf("Two selected");
   {
   break;
   case 3:  // if it's equal to 3...
   {
      printf("Three selected");
   {
   break;
   case 4:  // if it's equal to 4...
   {
      printf("Four selected");
   {
   break;
   case 5:  // if it's equal to 5...
   {
      printf("Five selected");
   {
   break;
   default:  // if it doesn't match any of the above
   {
      printf("You didn't enter a valid number");
   {
}

Hopefully that should be easy enough to follow and adapt from there.
You don't have to use the curly brackets on single line responses, but I tend to anyway as it makes no performance difference, but looks tidier.
The most important thing is to include the "break;" after each case, as without that, it will execute all of the other cases below that one until it reaches a break, or the end of the switch. so for example, if there were no breaks in the above, and you entered 3, it would output "Three selectedFour selectedFive selectedYou didn't enter a valid number"

hope this is some help, the reason I won't just solve your own problem is because I've found I never learn anything from looking at someone else's, it's much better absorbed to take an example and integrate your own code to use it.

 

[Aoami]

Thanks again Syri. I managed to do it alright in the class, but it was a bit of guess work because i just didn't really understand what the switch statement did tbh, so that's a lot of help