Compilare: user.cpp: In function ‘int main()’: user.cpp:14: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[51]’ user.cpp:19: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[51]’ user.cpp:38: warning: too many arguments for format user.cpp:40: warning: too many arguments for format user.cpp:10: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result