Mastering C++: A Comprehensive Quiz Based on 'Thinking in C++'

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Test your C++ skills with our quiz based on Bruce Eckel's 'Thinking in C++'. Dive into object-oriented programming, advanced topics, and fundamentals. Perfect for learners and experts alike. Assess your knowledge and become a C++ master!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What must be done before 'oneChar()' can return characters from the string 'a'?

Call 'oneChar()' with no arguments
Call 'oneChar(a)' to initialize 's' to 'a'
Declare 'a' as a global variable
Manually set 's' to the start of 'a'

The correct answer is: Call 'oneChar(a)' to initialize 's' to 'a'

Before 'oneChar()' can return characters from the string 'a', the function must first be initialized with the string 'a'. This is done by calling 'oneChar(a)' which will set the value of 's' to be equal to 'a'. Option A is incorrect because simply calling 'oneChar()' without any arguments will not initialize 's' to the string 'a'. Option C is incorrect because declaring 'a' as a global variable does not automatically set the value of 's' to be equal to 'a'. Option D is incorrect because manually setting 's' to the start of 'a' does not initialize the function with the string 'a'.