Compilare: main.cpp: In function 'int main()': main.cpp:98:11: warning: variable 'k' set but not used [-Wunused-but-set-variable] int n,k,q; ^ main.cpp: In function 'char adv()': main.cpp:16:37: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf,sizeof(char),SIZE,fin); ^