Rezumat problemă

Serpuire

#794

Se dă o matrice cu n linii şi n coloane şi elemente numere naturale. Să se afișeze elementele prin parcurgerea șerpuită a matricei, începând din elementul de pe prima linie și prima coloană, ca în exemplu.

Consola Candale Silviu (silviu) medie

Clasa 9 Tablouri bidimensionale (matrice) Parcurgerea matricelor pătratice

Rezolvă

Detalii

Problema	Serpuire	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64331346	Utilizator	Cantemir Mihai (mihaicantemir)
Fișier	serpuire.cpp	Dimensiune	476 B
Data încărcării	30 Aprilie 2026, 09:10	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

serpuire.cpp:1:21: warning: extra tokens at end of #include directive
    1 | #include <iostream> using namespace std; int n,a[26][26],i,j,s;
      |                     ^~~~~
serpuire.cpp: In function ‘int main()’:
serpuire.cpp:3:6: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
    3 |     {cin>>n;
      |      ^~~
      |      std::cin
In file included from serpuire.cpp:1:
/usr/include/c++/13/iostream:62:18: note: ‘std::cin’ declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
serpuire.cpp:3:11: error: ‘n’ was not declared in this scope
    3 |     {cin>>n;
      |           ^
serpuire.cpp:4:10: error: ‘i’ was not declared in this scope
    4 |      for(i=1;i<=n;i++)
      |          ^
serpuire.cpp:5:14: error: ‘j’ was not declared in this scope
    5 |          for(j=1;j<=n;j++)
      |              ^
serpuire.cpp:6:15: error: ‘a’ was not declared in this scope
    6 |          cin>>a[i][j];
      |               ^
serpuire.cpp:4:6: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
    4 |      for(i=1;i<=n;i++)
      |      ^~~
serpuire.cpp:7:10: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
    7 |          for(s=2;s<=2*n;s++)
      |          ^~~
serpuire.cpp:7:14: error: ‘s’ was not declared in this scope
    7 |          for(s=2;s<=2*n;s++)
      |              ^
serpuire.cpp:8:23: error: ‘i’ was not declared in this scope
    8 |      {if(s%2==0){ for(i=1;i<=n;i++)
      |                       ^
serpuire.cpp:9:7: error: ‘j’ was not declared in this scope
    9 |      {j=s-i;
      |       ^
serpuire.cpp:11:11: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
   11 |           cout<<a[i][j]<<" ";} }
      |           ^~~~
      |           std::cout
/usr/include/c++/13/iostream:63:18: note: ‘std::cout’ declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
serpuire.cpp:11:17: error: ‘a’ was not declared in this scope
   11 |           cout<<a[i][j]<<" ";} }
      |                 ^
serpuire.cpp:13:12: error: ‘i’ was not declared in this scope
   13 |       {for(i=n;i>=1;i--)
      |            ^
serpuire.cpp:15:11: error: ‘j’ was not declared in this scope
   15 |           j=s-i;
      |           ^
serpuire.cpp:16:14: warning: init-statement in selection statements only available with ‘-std=c++17’ or ‘-std=gnu++17’ [-Wc++17-extensions]
   16 |           if(j>=1 && j<=n;)
      |              ^
serpuire.cpp:16:27: error: expected primary-expression before ‘)’ token
   16 |           if(j>=1 && j<=n;)
      |                           ^
serpuire.cpp:17:15: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
   17 |               cout<<a[i][j]<<" ";}
      |               ^~~~
      |               std::cout
/usr/include/c++/13/iostream:63:18: note: ‘std::cout’ declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
serpuire.cpp:17:21: error: ‘a’ was not declared in this scope
   17 |               cout<<a[i][j]<<" ";}
      |                     ^
serpuire.cpp:20:17: error: expected ‘}’ at end of input
   20 |      return 0; }
      |                 ^
serpuire.cpp:2:11: note: to match this ‘{’
    2 | int main(){
      |           ^

Cum funcționează evaluarea?