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  1.     #include <vector>
  2.     #include <iostream>
  3.  
  4.     template<typename T>
  5.     size_t sizeit(std::vector<T> v)  // try changing to v1, v2 and vx
  6.     {
  7.         return v.size();  // change to match
  8.     }
  9.  
  10.     int main() {
  11.         std::vector<int> v1 { 1, 2, 3, 4, 5 };
  12.         std::vector<float> v2 { 1., 2., 3. };
  13.  
  14.         std::cout << "v1 size = " << sizeit(v1) << "\n";
  15.  
  16.         std::cout << "v2 size = " << sizeit(v2) << "\n";
  17.     }
  18.  
  19.  
Success #stdin #stdout 0s 3412KB
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stdin
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Standard input is empty
stdout
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v1 size = 5
v2 size = 3
https://ideone.com/cK13bR
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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