long double C = 2; long double U = 1; long double Y2 = 3; long double Y1 = 1; long double X, Y, Z, T, R, S; main () { X = (C + U) * Y2; Y = C - U - U; Z = C + U + U; T = (C - U) * Y1; X = X - (Z + U); R = Y * Y1; S = Z * Y2; T = T - Y; Y = (U - Y) + R; Z = S - (Z + U + U); R = (Y2 + U) * Y1; Y1 = Y2 * Y1; R = R - Y2; Y1 = Y1 - 0.5L; if (Z != 6) abort (); exit (0); }