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  1. // If you are not sure what some lines of code do, try looking back at
  2. // previous example programs, notes, or email a question.
  3.  
  4. #include <iostream>
  5.  
  6. using namespace std;
  7.  
  8. // A function that will return an integer, and takes an integer and a double as parameters
  9. int calc(int one, double two);
  10.  
  11. // A function that will not return anything, and takes two doubles as parameters
  12. void displayDbls(double disp1, double disp2);
  13.  
  14. int main() {	
  15. 	int value_one = 60;
  16. 	double value_two = 0.89;
  17.  
  18. 	int result;
  19.  
  20. 	// Call the function calc. Note that the actual parameters do not need
  21. 	// to have the same names as the formal parameters.
  22. 	result = calc(value_one, value_two);
  23.  
  24. 	// Display the result
  25. 	cout << "calc result: " << result << endl << endl;
  26.  
  27. 	// Call the function displayDbls using literal values. Note that no return value
  28. 	// is captured, as displayDbls returns void.
  29. 	displayDbls(5.67, 10.436);
  30.  
  31. 	return 0;
  32. }
  33.  
  34. // Implementation of calc
  35. int calc(int one, double two) {
  36. 	// Do some sort of calculation
  37. 	int result = -(one / two) * (one - two) / (-5648 / (one += two));
  38.  
  39. 	// Return the result
  40. 	return result;
  41. }
  42.  
  43. // Implementation of displayDbls
  44. void displayDbls(double disp1, double disp2) {
  45. 	// Output the two parameters to the console
  46. 	cout << "Double value 1: " << disp1 << endl
  47. 		 << "Double value 2: " << disp2 << endl;
  48.  
  49. }
Success #stdin #stdout 0s 3456KB
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Standard input is empty
stdout
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calc result: 42

Double value 1: 5.67
Double value 2: 10.436
https://ideone.com/SZVpa3
Example 04 - Functions
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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