Compilare: user.cpp: In function ‘int main()’: user.cpp:66: warning: array subscript has type ‘char’ user.cpp:66: warning: array subscript has type ‘char’ user.cpp:83: warning: comparison between signed and unsigned integer expressions user.cpp:95: warning: comparison between signed and unsigned integer expressions user.cpp:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result