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	#64810395	Utilizator	Emilian Necula (Emiliannec)
Fișier	permutari1.cpp	Dimensiune	572 B
Data încărcării	02 Iunie 2026, 19:33	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

permutari1.cpp: In function ‘void afisare()’:
permutari1.cpp:8:9: error: ‘cout’ was not declared in this scope
    8 |         cout << x[i] << " ";
      |         ^~~~
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:9:5: error: ‘cout’ was not declared in this scope
    9 |     cout << '\n';
      |     ^~~~
permutari1.cpp:9:5: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
permutari1.cpp: In function ‘void back(int)’:
permutari1.cpp:24:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   24 | int main() {
      |         ^~
permutari1.cpp:24:9: note: remove parentheses to default-initialize a variable
   24 | int main() {
      |         ^~
      |         --
permutari1.cpp:24:9: note: or replace parentheses with braces to value-initialize a variable
permutari1.cpp:24:12: error: a function-definition is not allowed here before ‘{’ token
   24 | int main() {
      |            ^
permutari1.cpp:27:2: error: expected ‘}’ at end of input
   27 | }
      |  ^
permutari1.cpp:15:12: note: to match this ‘{’
   15 |     } else {
      |            ^
permutari1.cpp:27:2: error: expected ‘}’ at end of input
   27 | }
      |  ^
permutari1.cpp:11:18: note: to match this ‘{’
   11 | void back(int k) {
      |                  ^

Cum funcționează evaluarea?