Compilare: user.cpp: In function 'void READ()': user.cpp:25: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[52]' user.cpp:32: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[1010]' user.cpp:20: warning: unused variable 'c' user.cpp: In function 'void SOLVE()': user.cpp:44: warning: comparison between signed and unsigned integer expressions