Rezumat problemă

Diagonale

#313

Se dă o matrice cu n linii și n coloane și elemente numere naturale. Calculați diferența în valoare absolută dintre sumele elementelor de pe cele două diagonale.

Consola Candale Silviu (silviu) ușoară

Clasa 9 Tablouri bidimensionale (matrice) Parcurgerea matricelor pătratice

Rezolvă

Detalii

Problema	Diagonale	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64144855	Utilizator	Movila Alesia (movila_alesia)
Fișier	diagonale.cpp	Dimensiune	261 B
Data încărcării	20 Aprilie 2026, 11:54	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

diagonale.cpp:1:2: error: invalid preprocessing directive #i; did you mean #if?
    1 | #i#include<iostream>
      |  ^
      |  if
diagonale.cpp: In function ‘int main()’:
diagonale.cpp:5:2: error: ‘cin’ was not declared in this scope
    5 | {cin>>n;
      |  ^~~
diagonale.cpp:1:1: note: ‘std::cin’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
  +++ |+#include <iostream>
    1 | #i#include<iostream>
diagonale.cpp:6:2: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
    6 |  for(int i=1;i<=n;++i)
      |  ^~~
diagonale.cpp:9:6: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
    9 |      for(int i=1;i<=n;++i)
      |      ^~~
diagonale.cpp:10:15: error: ‘j’ was not declared in this scope
   10 |      s1+=a[i][j],s2+=a[i][n+1-i];
      |               ^
diagonale.cpp:11:2: error: ‘cout’ was not declared in this scope
   11 |  cout<<abs(s1-s2);
      |  ^~~~
diagonale.cpp:11:2: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
diagonale.cpp:11:8: error: ‘abs’ was not declared in this scope
   11 |  cout<<abs(s1-s2);
      |        ^~~

Cum funcționează evaluarea?