Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:74: error: ‘u’ was not declared in this scope user.cpp:74: error: ‘v’ was not declared in this scope user.cpp:83: error: ‘u’ was not declared in this scope user.cpp:83: error: ‘v’ was not declared in this scope user.cpp:92: error: ‘u’ was not declared in this scope user.cpp:92: error: ‘v’ was not declared in this scope user.cpp:13: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result