for loop to while loop + additional condition

Question

I have a loop similar to this.

int total1, total2;
for (total1 = fsize(myfile);;) {
    total2 = fsize(myfile);
    ...
    ...
    total1 = total2;
}

What I would like to do is to convert this to a while loop and check for an extra condition before ending the loop.

I would like to do something like this:

while((total1 = fsize(myfile)) && input = getch() != 'Q') {
    total2 = fsize(myfile);
    ...
    total1 = total2;
}

Thanks

Answer 1

You can use a for:

for(total1 = fsize(myfile); (input = getch()) != 'Q';) {
    ...
}

Answer 2

Perhaps you meant

while((total1 == fsize(myfile)) && (input = getch() != 'Q')) {
    total2 = fsize(myfile);
    ...
    total1 = total2;
}

Mind those operators = is assignment == is comparison

Answer 3

The 'initialization' part of the for loop total1=fsize(myfile) has become part of the condition tested in your while loop. Is that what you intended??

Are you sure you didn't want this...

total1 = fsize(myfile);

while((input = getch()) != 'Q') {
  total2 = fsize(myfile);
  ...
  total1 = total2;
}