Rezumat problemă

Chenare

#286

Se dă un număr natural n. Construiţi o matrice pătratică de dimensiune n, în care elementele fiecărui chenar sunt egale cu numărul de ordine al chenarului.

Consola Candale Silviu (silviu) medie

Clasa 9 Tablouri bidimensionale (matrice) Generări de matrice

Rezolvă

Detalii

Problema	Chenare	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64567834	Utilizator	Andurnache Simeon (sime4gn)
Fișier	chenare.cpp	Dimensiune	404 B
Data încărcării	14 Mai 2026, 18:18	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

chenare.cpp: In function ‘int main()’:
chenare.cpp:6:9: error: ‘cin’ was not declared in this scope
    6 |         cin>>n;
      |         ^~~
chenare.cpp:2:1: note: ‘std::cin’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
    1 | #include <fstream>
  +++ |+#include <iostream>
    2 | using namespace std;
chenare.cpp:7:9: error: ‘nr’ was not declared in this scope; did you mean ‘n’?
    7 |         nr=(n+1)/2;
      |         ^~
      |         n
chenare.cpp:8:14: error: ‘k’ was not declared in this scope
    8 |         for (k=1; k<=nr; k++)
      |              ^
chenare.cpp:19:22: error: ‘k’ was not declared in this scope
   19 |         for (i=1; i<=k; i++)
      |                      ^
chenare.cpp:21:25: error: ‘cout’ was not declared in this scope
   21 |                         cout<<a[i][j]<<" ";
      |                         ^~~~
chenare.cpp:21:25: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
chenare.cpp:22:9: error: ‘cout’ was not declared in this scope
   22 |         cout<<"\n";
      |         ^~~~
chenare.cpp:22:9: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?

Cum funcționează evaluarea?