3 Questions
Which of the following is NOT a valid data type in C++?
string
Which of the following is a correct way to dynamically allocate memory for an integer in C++?
int *num = new int();
What is the output of the following code snippet: 'cout << (5 > 3 ? 10 : 5);'?
10
Study Notes
C++ Data Types
- There are certain data types that are not valid in C++.
Dynamic Memory Allocation in C++
- To dynamically allocate memory for an integer in C++, the correct way is to use
new int.
Conditional Operator in C++
- The conditional operator
? :is used to evaluate an expression and return one of two values. - The syntax is
condition ? value_if_true : value_if_false. - In the given code snippet,
cout << (5 > 3 ? 10 : 5);the output will be10because5 > 3is true.
Test your C++ coding skills with these exercises! Determine valid data types, predict the output of code snippets, and identify the correct method for dynamically allocating memory for integers.
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