Borderou de evaluare (job #429050)

Eroare de compilare: user.cpp: In function ‘int cont(int)’: user.cpp:10:8: error: ‘x’ was not declared in this scope user.cpp: In function ‘void afis()’: user.cpp:15:10: error: ‘x’ was not declared in this scope user.cpp: In function ‘void back(int)’: user.cpp:19:6: error: ‘x’ was not declared in this scope user.cpp:20:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] user.cpp: In function ‘int main()’: user.cpp:28:15: error: expected primary-expression before ‘]’ token user.cpp:29:4: error: expected ‘;’ before ‘int’ user.cpp:30:5: error: ‘k’ was not declared in this scope user.cpp:31:12: error: ‘nr’ was not declared in this scope