int main int argc char argv float printf vvedite znachenie scanf print

int main(int argc, char *argv[])
{
  float f,y,q ,a,b,c;
  
  printf("vvedite znachenie y ");
  scanf("%f" , &y);
  
  printf("vvvedite znachenie q ");
  scanf("%f" , &q);
  
  if( y!=0 || q!=0)
     {
       if(y!=0)
         {
           a=tan(y);
           printf("%f\n", a);
         }
       if(q!=0)
         {
           b=(1/tan(q));
           printf("%f", b);
         }
      }
  
  else
    {
       c=M_PI/7;
       printf("%f" ,c);
    }
     
  system("PAUSE");	
  return 0;
}