Rezumat problemă

Permutari1

#124

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

Fișiere Candale Silviu (silviu) ușoară

Clasa 11 Backtracking Elemente de combinatorică

Rezolvă

Detalii

Problema	Permutari1	Operații I/O	permutari1.in/permutari1.out
Limita timp	0.5 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64107086	Utilizator	petrescu loredana (ValentinaLoredanab)
Fișier	permutari1.cpp	Dimensiune	656 B
Data încărcării	17 Aprilie 2026, 11:26	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

permutari1.cpp:4:1: error: expected ‘,’ or ‘;’ before ‘ofstream’
    4 | ofstream g("permutari1.out")
      | ^~~~~~~~
permutari1.cpp: In function ‘void Afis()’:
permutari1.cpp:9:21: error: ‘n’ was not declared in this scope
    9 |     for( int j=1;j<=n;j++)
      |                     ^
permutari1.cpp:10:9: error: ‘cout’ was not declared in this scope
   10 |         cout<<x[j]<<" ";
      |         ^~~~
permutari1.cpp:2:1: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
    1 | #include <fstream>
  +++ |+#include <iostream>
    2 | using namespace std;
permutari1.cpp:10:15: error: ‘x’ was not declared in this scope
   10 |         cout<<x[j]<<" ";
      |               ^
permutari1.cpp:11:5: error: ‘cout’ was not declared in this scope
   11 |     cout<<endl;
      |     ^~~~
permutari1.cpp:11:5: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
permutari1.cpp: In function ‘bool OK(int)’:
permutari1.cpp:16:12: error: ‘x’ was not declared in this scope
   16 |         if(x[k]==x[i])
      |            ^
permutari1.cpp: In function ‘bool Solutie(int)’:
permutari1.cpp:23:17: error: ‘n’ was not declared in this scope
   23 |     return k == n;
      |                 ^
permutari1.cpp: In function ‘void back(int)’:
permutari1.cpp:27:15: error: ‘n’ was not declared in this scope
   27 |     for(int i=n ; i>=1 ; i--)
      |               ^
permutari1.cpp:29:9: error: ‘x’ was not declared in this scope
   29 |         x[k]=i;
      |         ^
permutari1.cpp:30:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wdangling-else]
   30 |         if( OK(k) )
      |           ^
permutari1.cpp: In function ‘int main()’:
permutari1.cpp:38:5: error: ‘cin’ was not declared in this scope
   38 |     cin>>n;
      |     ^~~
permutari1.cpp:38:5: note: ‘std::cin’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
permutari1.cpp:38:10: error: ‘n’ was not declared in this scope
   38 |     cin>>n;
      |          ^
permutari1.cpp: At global scope:
permutari1.cpp:42:5: error: expected unqualified-id before ‘return’
   42 |     return 0;
      |     ^~~~~~
permutari1.cpp:43:1: error: expected declaration before ‘}’ token
   43 | }
      | ^

Cum funcționează evaluarea?