C language, the flow chart of finding the root of equation ax2+bx+c=0, (note the difference between real root sum and no real root)

# include & ltstdio.h & gt

void main()

{load a, b, c, dt;

Printf ("enter a, b, c:");

Scanf("%f, %f, %f, & ampb & amp；; c)；

If (a= =0)

If (b= =0)

Printf ("\ nThis is not an equation!" );

other

Printf ("\ nThere is only one root, which is:% f"-c/b);

other

{ dt = b * b-4.0 * a * c；

if(dt & gt； =0.0)

{ dt = sqrt(dt)；

Printf ("The two roots are: %f, %f", (-b+dt)/(2 * a));

}

other

Printf ("no root");

}

}