matlab code to find the next highest integer

suppose i have a array a=[1 2 3 4 8 10 24] i have a random value for ex r=6;

i have to find the next highest integer to 6 in the given array i.e the output should be 8.

kindly help me with a matlab code

Answer 1

[KSSV]

a=[1 2 3 4 8 10 24] ;
b = a(a>6) ;
iwant = b(1)

Answer 2

[Jan]

a = [1 2 3 4 8 10 24];
r = 6;
b = a(find(a > 6, 1));

[shariq khan]

This is more precise

[Walter Roberson]

slightly yes as it will not error if there were no matches .