(C++) TemplateFunctionExample1

 

Technical facts

 

Operating system(s) or programming environment(s)

• Lubuntu 15.04 (vivid)

IDE(s):

• Qt Creator 3.1.1

Project type:

• Console application

C++ standard:

• C++11

Compiler(s):

• G++ 4.9.2

Libraries used:

• STL: GNU ISO C++ Library, version 4.9.2

 

 

 

 

 

Qt project file: ./CppTemplateFunctionExample1/CppTemplateFunctionExample1.pro

 

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TEMPLATE = app CONFIG += console CONFIG -= app_bundle CONFIG -= qt SOURCES += main.cpp CONFIG(release, debug|release) {   DEFINES += NDEBUG } QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++ unix {   QMAKE_CXXFLAGS += -Werror } win32 {   INCLUDEPATH += \     ../../Libraries/boost_1_54_0 }

 

 

 

 

 

./CppTemplateFunctionExample1/main.cpp

 

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int AbsInt(const int n) { return n < 0 ? -n : n; } double AbsDouble(const double n) { return (n < 0 ? -n : n); } template <class T> T Abs(const T n) { return n < 0 ? -n : n; } #include <cassert> #include <cmath> int main() {   const double pi = M_PI;   assert(AbsInt( 42) == 42);   assert(AbsInt(-42) == 42);   assert(AbsDouble( pi) == pi);   assert(AbsDouble(-pi) == pi);   assert(Abs( 42) == 42);   assert(Abs(-42) == 42);   assert(Abs( pi) == pi);   assert(Abs(-pi) == pi); }