fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Params {
  5. 	int p1;
  6. 	string p2;
  7.     double p3;
  8. };
  9.  
  10. string foo(const Params p) {
  11.   string result = "{";
  12.   if (p.p1 != 0) {
  13.   	result += to_string(p.p1);
  14.   }
  15.  
  16.   if (p.p2.length() > 0) {
  17.     if (result.length() > 0) {
  18.     	result += ", ";
  19.     }
  20.     result += p.p2;
  21.   }
  22.  
  23.   if (p.p3 != 0) {
  24.     if (result.length() > 0) {
  25.     	result += ", ";
  26.     }
  27.   	result += to_string(p.p3);
  28.   }
  29.  
  30.   result += "}";
  31.   return result;
  32. }
  33.  
  34. int main() {
  35. 	cout << foo({2}) << endl;
  36. 	cout << foo({.p1 = 3, .p2 = "aa"}) << endl;
  37. 	cout << foo({.p1 = 3, .p2 = "aa", .p3 = 3.1}) << endl;
  38. 	//cout << foo({.p2 = "aa"}) << endl;
  39. 	cout << foo({.p1 = 4}) << endl;
  40. 	//cout << foo({.p3 = 5.0}) << endl;
  41. 	return 0;
  42. }
Success #stdin #stdout 0s 4376KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
{2}
{3, aa}
{3, aa, 3.100000}
{4}
https://ideone.com/AklGBM
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!