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

Sum

count

count $<=4$

number

printout

$0$

$1$

true

$4$

$-$

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

$[1]$ Explain the function of the program in one sentence. $($Hint: For the function of the program, you can explain the printout of the program in terms of input values$).$

Given the following pseudocode, assume the sequence of input numbers is: $4,5,-1,2,-4,-2,6,8,-1,0.($Note: The program may not read all these numbers$).$

Set sum to $0$

Set count to $1$

WHILE $($count $<=4)$

Read number

IF $($number $>0)$

Set sum to sum $+$ number

Increment count

Write "Sum is $"+$ sum