Compilare: main.cpp: In function 'void read(int&)': main.cpp:17:45: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,buff_dim,fin),poz=0; ^ main.cpp:22:45: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,buff_dim,fin),poz=0; ^ main.cpp: In function 'int main()': main.cpp:52:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^