C++可变参模板 _C++

1、用可变参模板实现打印多个值
// basictemplate<typename T>void print(T v){std::cout << v << std::endl;}// variadic Templatetemplate<typename T,typename... Types>void print(const T& first, const Types&... args){std::cout << first << ", ";print(args...);}测试
print(1, 2, 3, 4, 5);测试结果

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2、用可变参模板实现多个数相加

// basictemplate<typename T>T sumUp(const T& v){std::cout << "In sumUp Base" << std::endl;return v; }template<typename T,typename... Types>T sumUp(const T& first, const Types&... args){std::cout << "In sumUp Main: count of arguments:"<< sizeof...(Types) << std::endl;return first + sumUp(args...);}

测试
std::cout << sumUp(1, 2, 3, 4, 5,6, 7, 8, 9, 10) << std::endl;测试结果