Function Read Code Competency:
Give the output for the following program. Show the runtime stack:
<html>
<body>
<script type=”text/javascript”>
function first(a,b)
{
document.write(“start” + a + b + c + “<br>”);
a=a+2;
c=c-1;
document.write(“end” + a + b + c + “<br>”);
return c-a;
}
function second(b)
{
a=4;
document.write(“begin sec” + a + b + c + “<br>”);
c=first(b,a);
document.write(“start” + a + b + c + “<br>”);
}
a=1; b=5; c=9;
document.write(“init” + a + b + c + “<br>”);
a = first(b,a);
document.write(“main” + a + b + c + “<br>”);
second(a);
document.write(“over” + a + b + c + “<br>”);
</script>
</body>
</html>
http://ada.evergreen.edu/~vanetta/readfunctions/functionRead1.html
Another Example:
<html>
<body>
<script type=”text/javascript”>
function first(a,b)
{
document.write(“start” + a + b + c + “<br>”);
a=a+2;
c=c-1;
document.write(“end” + a + b + c + “<br>”);
return c-a;
}
function second(b)
{
a=4;
document.write(“begin sec” + a + b + c + “<br>”);
c=first(b,a);
document.write(“start” + a + b + c + “<br>”);
}
a=1; b=5; c=9;
document.write(“init” + a + b + c + “<br>”);
a = first(b,a);
document.write(“main” + a + b + c + “<br>”);
second(a);
document.write(“over” + a + b + c + “<br>”);
</script>
</body>
</html>
http://ada.evergreen.edu/~vanetta/readfunctions/functionRead2.html