Compilare: main.cpp: In function 'char nextch()': main.cpp:24:37: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf, BUF_SIZE, 1, fin); ^ main.cpp: In function 'int query(int, int, int)': main.cpp:96:9: warning: 'rez1' may be used uninitialized in this function [-Wmaybe-uninitialized] int rez1, rez2; ^~~~