Rezumat problemă

perechipare

#3622

Se dă un interval [l,r]. Aflaţi câte perechi de numere pare se pot forma alegând două numere din interval.

nEUROn

Consola Bunget Mihai (mihaibun) Mihai Bunget ușoară

Clasa 9 Algoritmi elementari Sume, produse, numărări

Rezolvă

Detalii

Problema	perechipare	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64461357	Utilizator	Frunzaru Darius (Frunzaru_Darius_Andrei)
Fișier	perechipare.cpp	Dimensiune	313 B
Data încărcării	08 Mai 2026, 09:23	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

perechipare.cpp:1:1: error: ‘include’ does not name a type
    1 | include <iostream>
      | ^~~~~~~
perechipare.cpp: In function ‘int main()’:
perechipare.cpp:6:5: error: ‘cin’ was not declared in this scope
    6 |     cin>>l>>r;
      |     ^~~
perechipare.cpp:8:13: error: ‘j’ was not declared in this scope
    8 |         for(j=i+1;j<=r;j++)
      |             ^
perechipare.cpp:10:9: error: ‘nr’ was not declared in this scope; did you mean ‘r’?
   10 |         nr++;
      |         ^~
      |         r
perechipare.cpp:7:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
    7 |     for(i=l;i<=r;i++)
      |     ^~~
perechipare.cpp:11:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   11 |         if(j%2==0)
      |         ^~
perechipare.cpp:11:12: error: ‘j’ was not declared in this scope
   11 |         if(j%2==0)
      |            ^
perechipare.cpp:12:9: error: ‘nr’ was not declared in this scope; did you mean ‘r’?
   12 |         nr++;
      |         ^~
      |         r
perechipare.cpp:13:20: error: ‘j’ was not declared in this scope
   13 |         if(i%2==0&&j%2==0)
      |                    ^
perechipare.cpp:14:9: error: ‘nr’ was not declared in this scope; did you mean ‘r’?
   14 |         nr=nr+2;
      |         ^~
      |         r
perechipare.cpp:16:9: error: ‘nr’ was not declared in this scope; did you mean ‘r’?
   16 |         nr++;
      |         ^~
      |         r
perechipare.cpp:17:9: error: ‘cout’ was not declared in this scope
   17 |         cout<<nr;
      |         ^~~~
perechipare.cpp:17:15: error: ‘nr’ was not declared in this scope; did you mean ‘r’?
   17 |         cout<<nr;
      |               ^~
      |               r
perechipare.cpp:17:18: error: expected ‘}’ at end of input
   17 |         cout<<nr;
      |                  ^
perechipare.cpp:4:1: note: to match this ‘{’
    4 | {
      | ^

Cum funcționează evaluarea?