C++ class, Week 3

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Socoder -> C/C++/C#/Other -> C++ class, Week 3
Sat, 10 Oct 2009, 09:14
Afr0	Post your answers for Week 3! This week is about Control Statements. -=-=- Afr0 Games Project Dollhouse on Github - Please fork!
Sat, 10 Oct 2009, 16:45
Spare	1. if(y) x = x/y; --v I actually first was thinking !y, but it says does not equal 0. 2. To be continued --v 3. x = (!x%2) ? x*y : (y) ? x/y : 0; if(!x) { cout << "x = " << x; } --v
Mon, 12 Oct 2009, 10:31
Afr0	1. if(y) x = x/y if(y != 0) x = x/y --v 2. unsigned int Summation(unsigned int N, unsigned int I) { return N * ((N + I) /2); } int _tmain(int argc, _TCHAR* argv[]) { unsigned int Range = 5; unsigned int Sum = 1; std::cout << Summation(Range, Sum) << std::endl; std::cin.get(); return 0; } --v 3. if(x % 2) x = x * y; else { if(y != 0) x /= y; else std::cout << "y was 0!"; } --v -=-=- Afr0 Games Project Dollhouse on Github - Please fork!
Mon, 12 Oct 2009, 15:01
Phoenix	Or, an even more unusual solution: #include <iostream> template <int N> struct Summative { enum { Value = N + Summative<N-1>::Value }; }; template <> struct Summative<1> { enum { Value = 1 }; }; // Or just: // template <int N> struct Summative { enum { Value = N*(N+1)/2 }; }; int main() { std::cout << Summative<50>::Value; } --v You can achieve some pretty dazzling static algorithms with templates, although they usually aren't all that meaningful.
Mon, 12 Oct 2009, 18:53
Cower	For the sake of being able to comment on the correct-itude of your answers, could you post the problems or summarize what they want in answer in the future?