/**
 * \brief Perform addition on \p a and \p b.
 *
 * \param a One of the numbers to be added.
 * \param b Another number to be added.
 * \return The sum of \p a and \p b.
 * \code
 *     int sum = add(1, 2);
 * \endcode
 */
int add(int a, int b) {
    return a + b;
}