Compilare: user.cpp: In function ‘int main()’: user.cpp:39:36: warning: operation on ‘dim’ may be undefined [-Wsequence-point] cif[dim] = cif[dim++] - '0'; ^ user.cpp:36:10: warning: unused variable ‘c’ [-Wunused-variable] char c; ^ user.cpp:37:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(cif, 1000004, fin); ^ user.cpp:44:22: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(t, 20, fin); ^