Compilare: main.cpp: In function 'int main()': main.cpp:39:7: warning: unused variable 'dist' [-Wunused-variable] int dist = 0; ^~~~ main.cpp:20:28: 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, MAXBUF, fin); ^ main.cpp: In function 'void read(int&)': main.cpp:65:30: 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, MAXBUF, fin); ^ main.cpp:75:30: 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, MAXBUF, fin); ^