Compilare: user.cpp: In function ‘int rez(int&, int)’: user.cpp:38: warning: operation on ‘i’ may be undefined user.cpp:22: warning: unused variable ‘help’ user.cpp: In function ‘int main()’: user.cpp:91: warning: operation on ‘i’ may be undefined user.cpp:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result