Greenfoot

ipeefreely wrote ...

2015/5/18

what is the value of sum after the following code is executed?

ipeefreely

2015/5/18

sum = 0; 
for (x = 2; x < 6; x = x + 1)
{
sum = sum + x;
}

danpost

2015/5/18

The code will not compile as 'sum' and 'x' are not declared anywhere. However, if you had this:

int sum = 0;
for (int x=2; x<6; x=x+1)
{
    sum = sum+x;
}

then sum = 0+2, +3, +4, +5 = 14. I believe that this would work also:

int sum = 0;
for (int x=2; x<6; x++, sum+=x);

In fact, this may even work:

int sum = 0;
for (int x=2; x<6; sum+=(++x));

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