Compilare: user.cpp: In function ‘int main()’: user.cpp:40:12: warning: unused variable ‘j’ [-Wunused-variable] int n,s,i,j,k,x,y; ^ user.cpp:40:14: warning: unused variable ‘k’ [-Wunused-variable] int n,s,i,j,k,x,y; ^ user.cpp: In function ‘unsigned int getInt()’: user.cpp:27:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^ user.cpp:31:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^