How to calculate highest and lowest score using a while loop

[nuken]

the in input file is like
2 80 97
5 69 79 89 99 58
7 60 70 80 90 100 0 59
[

[weaknessforcats]

I don't see you referencing highscore or lowscore inside your while loop.

[Geocool]

if ( score > highscore )
    highscore = score;
else if (score < lowscore )
    lowscore = score;

Add the above code after "cin >> score;"

You have declared lowerscore as 1 so if you enter 20 is bigger than your already given(1) lower score so it doesn't take it.

I suggest to set first input as lowscore.
like:

bool isfirstinput(true);
while(!cin.eof()){
....
...
cin >> score;
if(isfirstinput==true)
{
lowscore=score;
isfirstinput = false; // so it won't pass to lowscore again
}
...

I hope this helps... ;)

[nuken]

I set lowscore equal to 100 and it works for the first one: