(C++) Product

Math code snippet to calculate the product of the elements of a std::vector.

 

Product can be programmed multiple ways:

• Using algorithms (preferred)
• Using a for-loop

 

 

 

 

 

Product using algorithms

 

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#include <vector> int Product(const std::vector<int>& v) {   const int sz = v.size();   const int product = 1;   for (int i=0; i!=sz; ++i)   {     product*=v[i];   }   return product; }

 

 

 

 

 

Product using a for-loop

 

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#include <vector> #include <algorithm #include <numeric> int Product(const std::vector<int>& v) {   return std::accumulate(v.begin(),v.end(),1,std::multiplies<int>()); }