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Detalii evaluare #31937905

Rezumat problemă

#1458 ecuatii_grad_2

Dându-se o ecuaţie de gradul 2, să se scrie un program care determină soluţiile acestei ecuaţii.

Rezolvă

Detalii

Problema ecuatii_grad_2 Operații I/O ecuatii.in/ecuatii.out
Limita timp 0.1 secunde Limita memorie Total: 64 MB / Stivă 8 MB
Id soluție #31937905 Utilizator rosca alexandru (alexandru775)
Fișier ecuatii_grad_2.cpp Dimensiune 1.63 KB
Data încărcării 29 Octombrie 2021, 22:14 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

ecuatii_grad_2.cpp: In function 'int main()':
ecuatii_grad_2.cpp:8:5: error: reference to 'cin' is ambiguous
     cin >> ch;

     ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:18:9: error: reference to 'cin' is ambiguous
         cin >> ch;

         ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:26:9: error: reference to 'cin' is ambiguous
         cin >> ch;

         ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:30:9: error: reference to 'cin' is ambiguous
         cin >> ch;

         ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:37:13: error: reference to 'cin' is ambiguous
             cin >> ch;

             ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:44:9: error: reference to 'cin' is ambiguous
         cin >> ch;

         ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:51:13: error: reference to 'cin' is ambiguous
             cin >> ch;

             ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:58:5: error: reference to 'cin' is ambiguous
     cin >> ch;

     ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:60:9: error: reference to 'cin' is ambiguous
         cin >> c;

         ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:62:9: error: reference to 'cin' is ambiguous
         cin >> c , c *= -1;

         ^
ecuatii_grad_2.cpp:3:10: note: candidates are: std::ifstream cin
 ifstream cin("ecuatii.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
ecuatii_grad_2.cpp:65:9: error: reference to 'cout' is ambiguous
         cout << -1;

         ^
ecuatii_grad_2.cpp:4:10: note: candidates are: std::ofstream cout
 ofstream cout("ecuatii.out");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
ecuatii_grad_2.cpp:69:9: error: reference to 'cout' is ambiguous
         cout << fixed << setprecision(2) << rez;

         ^
ecuatii_grad_2.cpp:4:10: note: candidates are: std::ofstream cout
 ofstream cout("ecuatii.out");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
ecuatii_grad_2.cpp:78:9: error: reference to 'cout' is ambiguous
         cout << fixed << setprecision(2) << rez1 << ' ' << rez2;

         ^
ecuatii_grad_2.cpp:4:10: note: candidates are: std::ofstream cout
 ofstream cout("ecuatii.out");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from ecuatii_grad_2.cpp:1:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^

Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:

  • probleme la care rezolvarea presupune scrierea unui program complet
  • probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.

Problema ecuatii_grad_2 face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:

  • Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
  • Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.

Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.