Entire Site
Free Trial
Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
- Create BookmarkCreate Bookmark
- Create Note or TagCreate Note or Tag
- DownloadDownload
- PrintPrint
Chapter 2. Top of the class > Conversions
2.12. Conversions
A constructor that can be called with a single argument (of a different type) is a conversion constructor because it defines a conversion from the argument type to the constructor’s class type.
Example 2.19. src/ctor/conversion/fraction.cpp
|
Code View:
Scroll
/
Show All class Fraction {
public:
Fraction(int n) 1
: m_Numer(n), m_Denom(1) {}
Fraction(int n, int d )
: m_Numer(n), m_Denom(d) {}
Fraction times(const Fraction& other) {
return Fraction(m_Numer * other.m_Numer, m_Denom * other.m_Denom);
}
private:
int m_Numer, m_Denom;
};
int main() {
int i;
Fraction frac(8); 2
Fraction frac2 = 5; 3
frac = 9; 4
frac = (Fraction) 7; 5
frac = Fraction(6); 6
frac = static_cast<Fraction>(6); 7
frac = frac2.times(19); 8
return 0;
}
|
