Compilare: user.cpp: In function ‘int main()’: user.cpp:16: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[60001]’ user.cpp:8: warning: unused variable ‘a’ user.cpp:8: warning: unused variable ‘len’ user.cpp:13: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:16: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:8: warning: ‘k’ may be used uninitialized in this function