Compilare: user.cpp: In function ‘int main()’: user.cpp:41:35: warning: unused variable ‘cst’ [-Wunused-variable] int x0,x1,y0,y1,i,j,newx,newy,cst,x,y; ^ user.cpp: In function ‘unsigned int getInt()’: user.cpp:20:36: 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:24:40: 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; ^