Compilare: main.cpp: In function 'int main()': main.cpp:38:9: warning: unused variable 'x' [-Wunused-variable] int x,y; ^ main.cpp:38:11: warning: unused variable 'y' [-Wunused-variable] int x,y; ^ main.cpp: In function 'void read(int&)': main.cpp:26:36: 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,dim,fin),poz=0; ^ main.cpp:31:36: 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,dim,fin),poz=0; ^