Eroare de compilare: user.cpp:1:21: error: iostream.h: No such file or directory user.cpp: In function ‘void citire_mesaj()’: user.cpp:8: error: ‘cout’ was not declared in this scope user.cpp:9: error: ‘cin’ was not declared in this scope user.cpp:7: warning: unused variable ‘k’ user.cpp:7: warning: unused variable ‘x’ user.cpp:7: warning: unused variable ‘y’ user.cpp: In function ‘void afisare_matrice()’: user.cpp:23: error: ‘cout’ was not declared in this scope user.cpp: In function ‘void afisare_arbore(char*, int*, int)’: user.cpp:34: error: ‘cout’ was not declared in this scope user.cpp:34: error: ‘endl’ was not declared in this scope user.cpp: In function ‘void formare_arbore()’: user.cpp:43: error: ‘cout’ was not declared in this scope user.cpp:44: error: ‘cin’ was not declared in this scope user.cpp:52: error: expected ‘)’ before ‘{’ token user.cpp:62: warning: the address of ‘S’ will always evaluate as ‘true’ user.cpp:63: error: expected primary-expression before ‘}’ token user.cpp:63: error: expected ‘;’ before ‘}’ token user.cpp:65: error: a function-definition is not allowed here before ‘{’ token user.cpp:72: error: expected ‘}’ at end of input