Generic Programming Templates in C++/

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- Solution

- Solution

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Solution Review

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// sum.cpp
#include <iostream>
template<typename ...Args>     // Without an initial value
auto sum(Args&& ... args){
    return ( ... + args);
}
template<typename T, typename ...Args>          // with an initial value    
auto sumWithStart(T&& t, Args&& ... args){
    return ( t + ... + args);
}
int main(){
  std::cout << sum(1, 2, 3) << std::endl;
  std::cout << sumWithStart(20, 1, 2, 3) << std::endl;
}

Explanation

In the above code, we have ...