Rezumat problemă

Zona4

#1749

Considerăm o matrice pătratică cu N linii și N coloane. În această matrice sunt definite 4 zone:

• zona 1, formată din elementele situate strict deasupra diagonalei principale și strict deasupra diagonalei secundare;
• zona 2, formată din elementele situate strict deasupra diagonalei principale și strict sub diagonala secundară;
• zona 3, formată din elementele situate strict sub diagonala principală și strict sub diagonala secundară;
• zona 4, formată din elementele situate strict sub diagonala principală și strict deasupra diagonalei secundare;

Se dă o matrice pătratică și un număr natural Z, reprezentând o zonă din matrice. Să se determine suma elementelor din zona Z.

Consola Candale Silviu (silviu) ușoară

Clasa 9 Tablouri bidimensionale (matrice) Parcurgerea matricelor pătratice

Rezolvă

Detalii

Problema	Zona4	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64464736	Utilizator	Niculescu Vladimir (vladimir_niculescu)
Fișier	zona4.cpp	Dimensiune	537 B
Data încărcării	08 Mai 2026, 11:15	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

zona4.cpp: In function ‘int main()’:
zona4.cpp:13:4: error: ‘fin’ was not declared in this scope
   13 |    fin >> n;
      |    ^~~
zona4.cpp:16:8: error: ‘cin’ was not declared in this scope
   16 |        cin>> a[i][j];
      |        ^~~
zona4.cpp:2:1: note: ‘std::cin’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
    1 | #include <fstream>
  +++ |+#include <iostream>
    2 | #define NMAX 102
zona4.cpp:20:6: error: ‘mij’ was not declared in this scope
   20 |      mij = (n+1)/2
      |      ^~~
zona4.cpp:21:14: warning: statement has no effect [-Wunused-value]
   21 |    for(i=1; i<=n; i++)
      |             ~^~~
zona4.cpp:21:22: error: expected ‘;’ before ‘)’ token
   21 |    for(i=1; i<=n; i++)
      |                      ^
      |                      ;
zona4.cpp:23:6: error: ‘cout’ was not declared in this scope
   23 |      cout << s << '\n';
      |      ^~~~
zona4.cpp:23:6: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
zona4.cpp:28:6: error: ‘mij’ was not declared in this scope
   28 |      mij = (n+1)/2+1;
      |      ^~~
zona4.cpp:32:26: error: expected primary-expression before ‘;’ token
   32 |         for(j=n-i+2; j<i;; j++)
      |                          ^
zona4.cpp:32:26: error: expected ‘)’ before ‘;’ token
   32 |         for(j=n-i+2; j<i;; j++)
      |            ~             ^
      |                          )
zona4.cpp:32:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   32 |         for(j=n-i+2; j<i;; j++)
      |         ^~~
zona4.cpp:32:28: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   32 |         for(j=n-i+2; j<i;; j++)
      |                            ^
zona4.cpp:31:6: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   31 |      for(i=mij; i<= n; i++)
      |      ^~~
zona4.cpp:32:28: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   32 |         for(j=n-i+2; j<i;; j++)
      |                            ^
zona4.cpp:32:31: error: expected ‘;’ before ‘)’ token
   32 |         for(j=n-i+2; j<i;; j++)
      |                               ^
      |                               ;
zona4.cpp:34:2: error: ‘cout’ was not declared in this scope
   34 |  cout << s << '\n';
      |  ^~~~
zona4.cpp:34:2: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?

Cum funcționează evaluarea?