Uninitialized Variables

Question 1

Uninitialized variables

Answer 1

Variable that has not been given a known value

Question 2

Undefined behaviour

Answer 2

Result of executing code whose behaviour is not defined by c++

Question 3

Some unidentified behaviour

Answer 3

• the program produces different result every time
• consistently produces the same incorrect result
• behaves inconsistently
• seems like it’s working but produces incorrect result
• crashes
• works on some compilers but not on others
• works until you change some unrelated code