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  1. #include <algorithm>
  2. #include <iostream>
  3. #include <iomanip>
  4.  
  5. float half(float num)
  6. {
  7.     return num / 2;
  8. }
  9.  
  10. int main()
  11. {
  12.     // Declares variables
  13.     float nums[3]; // or std::array<float, 3> nums; or std::vector<float> nums(3);
  14.     float halfvalues[3];
  15.  
  16.     //asks for values
  17.     std::cout << "Enter 3 real numbers and I will display their halves: " << std::endl << std::endl;
  18.     //stores values
  19.     for (auto& v : nums) {
  20.         std::cin >> v;
  21.     }
  22.     //return half and assign result to halfvalue
  23.     std::transform(std::begin(nums), std::end(nums), std::begin(halfvalues), &half);
  24.  
  25.     //set precision
  26.     std::cout << std::fixed << std::showpoint << std::setprecision (3);
  27.     //Prints message with results
  28.     for (const auto& v : halfvalues) {
  29.         std::cout << " " << v;
  30.     }
  31.     std::cout << " are the halves of ";
  32.     for (const auto& v : nums) {
  33.         std::cout << " " << v;
  34.     }
  35.     std::cout << std::endl;
  36. }
  37.  
  38.  
Success #stdin #stdout 0s 3460KB
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stdin
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9 4 2
stdout
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Enter 3 real numbers and I will display their halves: 

 4.500 2.000 1.000 are the halves of  9.000 4.000 2.000
https://ideone.com/FUzxZJ
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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