Eroare de compilare: user.cpp:1:21: error: iostream.h: No such file or directory user.cpp:4: error: ‘::main’ must return ‘int’ user.cpp: In function ‘int main()’: user.cpp:5: error: ‘cout’ was not declared in this scope user.cpp:6: error: ‘cin’ was not declared in this scope user.cpp:8: warning: suggest parentheses around assignment used as truth value user.cpp:16: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result