计算下列分段函数的值

#include <stdio.h>
int main()
{
      float x,y;
      scanf("%f",&x);
      if(x<=10)
          y = x+5;
      else if(x>50)
        y = x*x-3*x+1;
      else
        y = x-10;
      printf("%f",y);
      return 0;
}