fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int foo(const int& a, int & b) {
  5. 	b += a;
  6. 	cout << a << endl;
  7. }
  8.  
  9. int main() {
  10. 	int a = 5;
  11. 	const int & b = a;
  12. 	foo(a,a);
  13. 	foo(b,b);
  14. 	return 0;
  15. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:13:8: error: binding ‘const int’ to reference of type ‘int&’ discards qualifiers
  foo(b,b);
        ^
prog.cpp:4:5: note:   initializing argument 2 of ‘int foo(const int&, int&)’
 int foo(const int& a, int & b) {
     ^~~
stdout
copy 
Standard output is empty
https://ideone.com/sOcMvB
language:
C++14 (gcc 8.3)
created:
7 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!