Help to copy Array a into first portion of array b

I need help with how to copy array a into first portion of array b. Assume double a[11], b[34].

This is what I have so far:

double i = 0;

a[11];

b[34 (sizeof (a) ) ];

do

{

b[ i ] = a[ i ]
itt;
}
while ( i < sizeof (a) );
:confused:

memcpy() is your friend (well, ok, so is google)

Thanks for your response but I'm a baby in C Programming -- please explain your reponse in laymans terms.:o

memcpy() is the function most appropriate for this situation
google is the search engine most appropriate for any situation

Thank you Salem!