Rezumat problemă

Permutari

#123

Se citeşte un număr natural nenul n. Să se afişeze, în ordine lexicografică, permutările mulţimii {1,2,..,n}.

Fișiere Candale Silviu (silviu) ușoară

Clasa 11 Backtracking Elemente de combinatorică

Rezolvă

Detalii

Problema	Permutari	Operații I/O	permutari.in/permutari.out
Limita timp	0.5 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#63949289	Utilizator	Parlici Laura (laura14p08)
Fișier	permutari.cpp	Dimensiune	673 B
Data încărcării	29 Martie 2026, 15:41	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

permutari.cpp:3:1: error: 'ifstream' does not name a type
 ifstream fin ("permutari.in");

 ^
permutari.cpp:4:1: error: 'ofstream' does not name a type
 ofstream fout ("permutari.out");

 ^
permutari.cpp:5:8: error: expected unqualified-id before 'int'
 int n, int v[10];

        ^
permutari.cpp: In function 'int valid(int)':
permutari.cpp:8:8: error: 'v' was not declared in this scope
     if(v[i]==v[k])

        ^
permutari.cpp: In function 'void afisare(int)':
permutari.cpp:16:9: error: 'fout' was not declared in this scope
         fout<<v[i]<<" ";

         ^
permutari.cpp:16:15: error: 'v' was not declared in this scope
         fout<<v[i]<<" ";

               ^
permutari.cpp:17:5: error: 'fout' was not declared in this scope
     fout<<endl;}

     ^
permutari.cpp:17:11: error: 'endl' was not declared in this scope
     fout<<endl;}

           ^
permutari.cpp:17:11: note: suggested alternative:
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from permutari.cpp:1:
/usr/include/c++/4.8/ostream:564:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^
permutari.cpp: In function 'void back(int)':
permutari.cpp:20:6: error: 'v' was not declared in this scope
     {v[k]=i;

      ^
permutari.cpp:21:9: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
      if (valid(k))

         ^
permutari.cpp:26:15: error: a function-definition is not allowed here before '{' token
     int main(){

               ^
permutari.cpp:31:18: error: expected '}' at end of input
         return 0;}

                  ^
permutari.cpp: In function 'int valid(int)':
permutari.cpp:10:18: warning: control reaches end of non-void function [-Wreturn-type]
        return 1;}}

                  ^

Cum funcționează evaluarea?