Detalii evaluare: ~61633063

Detalii evaluare #61633063

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ecuatii_grad_2

#1458

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

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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	`#61633063`	Utilizator	Cărămidă Mario (Akaza)
Fișier	ecuatii_grad_2.cpp	Dimensiune	1.33 KB
Data încărcării	04 Decembrie 2025, 15:31	Scor/rezultat	Eroare de compilare

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Mesaj compilare

ecuatii_grad_2.cpp: In function 'int main()':
ecuatii_grad_2.cpp:7:5: 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:14:9: 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:19:31: error: reference to 'cin' is ambiguous
     while(ch!='-' && ch!='+') 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:22:9: 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:27:13: 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:31:9: 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:36:13: 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:42:5: 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:43:17: error: reference to 'cin' is ambiguous
     if(ch=='+') 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:44:10: error: reference to 'cin' is ambiguous
     else 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:46:17: error: reference to 'cout' is ambiguous
     if(delta<0) 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:49:9: 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:55:9: 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.

Du-te sus!