I/O Errors

Question 1

How are inputs to a c++ deliniated?

Answer 1

By white space.
“./MyCode.exe in1 in2 in3” becomes {“MyCode.exe” “in1”, “in3”, “in3”}

Question 2

What are the string to datatype conversion functions?

Answer 2

• stoi (int)
• stod (double)
• stof (float)
• stol (long)

Question 3

What is a Usage Message?

Answer 3

A message that will print when argc == 1 (or greater than required argc) telling the user how to use the program. Stops execution after.

Question 4

When returning from main, what does a value of ‘0’ signify?

Answer 4

Normal execution, no problems.

Question 5

What library contains all the exception and error classes for c++?

Answer 5

“stdexcept”

Question 6

Why is it important to know what a method / functions throws in C++?

Answer 6

Because, unlike Java, calling methods / functions are not aware of what the called method throws.

Question 7

What is throwable in C++?

Answer 7

Everything.

Question 8

In C++ try catch blocks, what is the universal catch operator?

Answer 8

catch(…)