This is my code and its passing testcase0 but its failing in other test cases so what is the issue

include

include

using namespace std;

int main() { int T; cin >> T; cout << setiosflags(ios::uppercase); cout << setw(0xf) << internal; while(T--) { double A; cin >> A; double B; cin >> B; double C; cin >> C; int a= static_cast(A); char hex[1000]; std::sprintf(hex,"%X",a); cout<

    string sign;
    if(B>=0){
        sign="+";

    }
    else{
        sign="-";
    }
    cout <<"_______"<<sign<<std::fixed<<std::setprecision(2)<<B<<endl;

      std::cout << std::scientific <<setprecision(9) <<C << std::endl;



}
return 0;

}