Compilare: user.cpp: In function ‘int main()’: user.cpp:86:28: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long unsigned int’ [-Wformat=] printf("%d\n",sizeof(g)); ^ user.cpp:88:26: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long unsigned int’ [-Wformat=] printf("%d",sizeof(g)); ^ user.cpp: In function ‘char getChar(FILE*)’: user.cpp:17:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,1,BUF_SIZE,fin); ^