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C/C++課題ネタ06_関数テンプレート、クラステンプレート
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//========== | |
// テンプレート(関数テンプレート) | |
// 1, Compile | |
// g++ -std=c++17 -Wall -Wextra main.cpp | |
// 2, Run | |
// ./a.out | |
#include <math.h> | |
#include <stdio.h> | |
template <typename T> | |
T add(const T& a, const T& b){ | |
return a + b; | |
} | |
int main(){ | |
// Test | |
const int numA = add<int>(1, 2); | |
printf("numA: %d\n", numA); | |
const float numB = add<float>(1.0f, 2.0f); | |
printf("numB: %f\n", numB); | |
const double numC = add<double>(1.0, 2.0); | |
printf("numC: %f\n", numC); | |
return 0; | |
} |
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//========== | |
// テンプレート(クラステンプレート) | |
// 1, Compile | |
// g++ -std=c++17 -Wall -Wextra main.cpp | |
// 2, Run | |
// ./a.out | |
#include <math.h> | |
#include <stdio.h> | |
template <typename T> | |
class Vec2{ | |
public: | |
const T x; | |
const T y; | |
Vec2(T x, T y): x(x),y(y){} | |
}; | |
int main(){ | |
const Vec2<int> vecA(1, 2); | |
const Vec2<float> vecB(1.0f, 2.0f); | |
printf("vecA: %d, %d\n", vecA.x, vecA.y); | |
printf("vecB: %f, %f\n", vecB.x, vecB.y); | |
return 0; | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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//========== | |
// テンプレート(クラステンプレート+演算子オーバーライド) | |
// 1, Compile | |
// g++ -std=c++17 -Wall -Wextra main.cpp | |
// 2, Run | |
// ./a.out | |
#include <math.h> | |
#include <stdio.h> | |
template <typename T> | |
class Vec2{ | |
public: | |
const T x; | |
const T y; | |
Vec2(T x, T y): x(x),y(y){} | |
Vec2 operator+(const Vec2 &rhs) const{ | |
return Vec2(x+rhs.x, y+rhs.y); | |
} | |
Vec2 operator-(const Vec2 &rhs) const{ | |
return Vec2(x-rhs.x, y+rhs.y); | |
} | |
}; | |
int main(){ | |
const Vec2<int> vecA(1, 2); | |
const Vec2<int> vecB(3, 4); | |
const Vec2<int> vecC = vecA + vecB; | |
printf("vecC: %d, %d\n", vecC.x, vecC.y); | |
const Vec2<int> vecD = vecC + vecA + vecB; | |
printf("vecD: %d, %d\n", vecD.x, vecD.y); | |
return 0; | |
} |
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