Compilare: user.cpp: In function ‘int main()’: user.cpp:65:32: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] read_init("saracsaurege.in"); ^ user.cpp: In function ‘char get_ch()’: user.cpp:26:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,4096,f); ^