$11.$ Given the following pseudocode, assume the sequence of input numbers is: $4,5,-1,2,-4,-2,6,8.($Note: The program may not read all these numbers$).$

Set sum to $0$

Set count to $1$

WHILE $($count $<=4)$

Read number

Set sum to sum $+$ number

Increment count

Write "Sum is $"+$ sum

$[4]$ Trace the program by writing the values of variables, conditions, and printout in a table $($shown below$).$

Sum count count $<=4$ number printout

$01$ true $4-$

$[1]$ How many numbers does the program read?

$[1]$ Explain the function of the program in one sentence