tried it as well,
dont know why i still get the error message:

main.cpp:193:9: error: invalid operands to binary expression ('stringstream' (aka 'basic_stringstream') and 'X')
out << X();
~~~ ^ ~~~
/usr/include/c++/v1/ostream:191:20: note: candidate function not viable: no known conversion from 'X' to 'std::__1::basic_ostream &()(std::__1::basic_ostream &)' for 1st argument
basic_ostream& operator<<(basic_ostream& (__pf)(basic_ostream&));

in c language, i pass all the test but last one crashes,

i get this error code:
"Test Crashed
Exit code: 0
Signal code: 6"

what could i be doiing wrong?

Tests for 1 and 10 are successful, but test for 40 comes out wrong:
right answer is 1.4788962720000001 , but got: 1.4235528840000000.

any idea why can it be?

i corrected it to question

in C version:
I don't understand the concept of return strdup, why not reurn a string?
itoa is not working, how will u suggest inserting the count for each error to the output? (u 2....w 4... )
why use '/r' and not use '\n'?

Thanks

in c programming:

1. how do i return an array if the function is void?
2. in the examples the function takes as an argument a single array, when in the program i need to write i see that the function takes 3 arguments: const int weights[], int count, int teams[]. I don't understand it....

what's not clear to me in this ex. solution in C language:

1. should i return a two dimentional array?
2. should i return a one dimentional array (list)?
3. should i return a string with all the curly parentheses included?
4. should i print a string with all the curly parentheses included?

I'm completely lost...