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c++visual-studio-2015bracketscurly-brackets

Do both parentheses and braces around expressions basically do the same thing?

Simply put, are these two for cycles functioning the same way:

for (int i = 0; i < (p_size < size ? p_size : size); i++);
for (int i = 0; i < {p_size < size ? p_size : size}; i++);

?

The loop is inside a method (member function), p_size is its parameter and size is an attribute (member variable). Microsoft Visual Studio 2015 compiles both codes, but p_size is not coloured like the other parameters (in the editor) in the code with the curly brackets.

Solution

  • This is valid code:

    for (int i = 0; i < (p_size < size ? p_size : size); i++);

    This is invalid code:

    for (int i = 0; i < {p_size < size ? p_size : size}; i++);

    Having curly braces in the middle of the expression like that is invalid.

    I'd also in general recommend std::min:

    for (int i = 0; i < std::min(p_size, size); i++);