C coding help

[Mira Yurizaki]

1 minute ago, TheRedViper said:

yeah

What's your development environment?

[TheRedViper]

1 minute ago, M.Yurizaki said:

What's your development environment?

I'm working with Microsoft Visual Studio 2008 on win32 console app

[Mira Yurizaki]

1 minute ago, TheRedViper said:

I'm working with Microsoft Visual Studio 2008 on win32 console app

Are you using the debugger, setting a break point at the scanf, and stepping through to see what's going on?

[TheRedViper]

1 minute ago, M.Yurizaki said:

Are you using the debugger, setting a break point at the scanf, and stepping through to see what's going on?

no

[Mira Yurizaki]

3 minutes ago, TheRedViper said:

no

You should really familiarize yourself with the debugger and how to work it. This will save you an astronomical amount of headaches.

[TheRedViper]

1 minute ago, M.Yurizaki said:

You should really familiarize yourself with the debugger and how to work it. This will save you an astronomical amount of headaches.

I think my teacher wants us to have headaches, but like I said il ask him tomorrow because I cant advance right now.

[Unimportant]

11 hours ago, TheRedViper said:

yeah

That really should not be possible. It is possible for your program to get stuck in an infinite loop because you do not check scanf's return value in both calls. If scanf encounters a character that does not match the required format, it will not consume the character and indicate trough its return value that it failed to read some of the requested items. Because the character that caused the read to fail stays stuck in stdin, scanf will keep failing and get your program in a infinite loop.

 

However, even if that happens all the printf's in between should still happen. Merely repeating that 1 line is impossible with the code you've shown.

 

The REAL solution is to stop using scanf, it's been considered a unsafe function for decades now, and newer versions of MSVC++ and GCC even complain about it being deprecated. The canonical solution is to use fgets to safely read lines that are guaranteed not to overflow your input buffer and then parse the line.

[TheRedViper]

20 hours ago, M.Yurizaki said:

You should really familiarize yourself with the debugger and how to work it. This will save you an astronomical amount of headaches.

 

8 hours ago, Unimportant said:

That really should not be possible. It is possible for your program to get stuck in an infinite loop because you do not check scanf's return value in both calls. If scanf encounters a character that does not match the required format, it will not consume the character and indicate trough its return value that it failed to read some of the requested items. Because the character that caused the read to fail stays stuck in stdin, scanf will keep failing and get your program in a infinite loop.

 

However, even if that happens all the printf's in between should still happen. Merely repeating that 1 line is impossible with the code you've shown.

 

The REAL solution is to stop using scanf, it's been considered a unsafe function for decades now, and newer versions of MSVC++ and GCC even complain about it being deprecated. The canonical solution is to use fgets to safely read lines that are guaranteed not to overflow your input buffer and then parse the line.

 

The problem turned out to be microsoft studio. The code was running fine. Thank you for helping though, it is greatly appreciated!