Question

Se dau urmatoarele secvente de operatii de atribuire :
S1: a <- 1 , b <-2, c <-3 , d <-4
S2: a <-b, b <-c, c <-d , d <-a
S3: b <-c , c <-d , d <- a , a <-b
S4: c <-d , d <-a , a <-b , b <-c
Sa se precizeze valorile variabilelor de memorie a b c d obtinute in urma executarii operatiilor de atribuire , in ordinea
a) s1 , s3 , s2
b) s1, s2 , s3 ,s4
c) s1 , s2 , s2 , s3

Answer 1

cu '=' notez <-
a) s1, s3, s2
s1 : a = 1, b = 2, c = 3 , d = 4
s3 : a = 3, b = 3 ,c = 4 , d = 1
s2 : a = 3, b = 4 ,c = 1 , d = 3
b) s1,s2,s3,s4
s1 : a =  1 ,b = 2 , c = 3 , d = 4
s2 : a =  2 ,b = 3 , c = 4 , d = 2
s3 : a =  4 ,b = 4 , c = 2 , d = 2
s4 : a =  4 ,b = 2 , c = 2 , d = 4
c) s1,s2,s2,s3
s1 : a =  1 ,b = 2 , c = 3 , d = 4
s2 : a =  2 ,b = 3 , c = 4 , d = 2
s2 : a =  3 ,b = 4 , c = 2 , d = 3
s3 : a =  2 ,b = 2 , c = 3 , d = 3