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This answer and it's multitude of duplicates indicate that I should be using #include <c*> for the C headers that I pull from in C++ code, and that I should be calling them with std::*.
I have been doing that but I notice an exception. std::assert doesn't seem to be defined, even when I correctly #include <cassert>.
What's going on here? Is this an implementation oversight, or an actual exception?
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h is a header file in the standard library of the C programming language that defines the C preprocessor macro assert() . In C++ it is also available through the <cassert> header file.
Assertions are only used by lazy programmers who don't want to code up error handling. If you know an error is possible, handle it. If it's not possible, then there is no reason to assert.
The C language provides an <assert. h> header file and corresponding assert() macro that a programmer can use to make assertions. If an assertion fails, the assert() macro arranges to print a diagnostic message describing the condition that should have been true but was not, and then it kills the program.
Assertions in C/C++ Following is the syntax for assertion. void assert( int expression ); If the expression evaluates to 0 (false), then the expression, sourcecode filename, and line number are sent to the standard error, and then abort() function is called.
assert is a macro, not a function. Hence, it needs to be used with plain old assert(condition).
Here's a supporting link: http://en.cppreference.com/w/cpp/error/assert.
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