In C++, a variable name cannot start with: 1) An underscore 2) A letter 3) A number 4) A capital letter Which is a floating-point data type in C++? 1) int 2) char 3) double 4) bool... In C++, a variable name cannot start with: 1) An underscore 2) A letter 3) A number 4) A capital letter Which is a floating-point data type in C++? 1) int 2) char 3) double 4) boolean Which keyword is used to define a constant in C++? 1) #define 2) const
Understand the Problem
The question is asking about the rules for naming variables in C++, specifically what a variable name cannot start with, what floating-point data types exist in C++, and which keyword is used to define a constant. This indicates knowledge of C++ programming syntax and data types.
Answer
1) A number 2) double 3) const
- A variable name in C++ cannot start with a number. 2) 'double' is a floating-point data type in C++. 3) 'const' is used to define a constant in C++.
Answer for screen readers
- A variable name in C++ cannot start with a number. 2) 'double' is a floating-point data type in C++. 3) 'const' is used to define a constant in C++.
More Information
C++ variable names cannot start with numbers but can start with letters or underscores. 'double' is used for floating-point numbers, and 'const' is used for constants.
Tips
Common mistakes include confusing 'int' and 'double' or mixing up 'const' and '#define'.
Sources
- C++ Variables and Types - guru99.com
- Valid and Invalid C Variable Names - quora.com
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