#include<stdio.h>
int main()
{
int x;
setbuf(stdout,NULL);
printf("Enter x: \n");
scanf("%d\n",&x);
printf("You entered x: %d", x);
printf("y=%d\n",(3*x*x*x)-(5*x*x)+6);
return 0;
}
scanf("%d",&x);
dont write '\n' in scanf function