Use of unassigned local,error

Question

i got a problems about calculating exam's marks.

int midterm,finalexam,makeupexam;
double average;
try
{
midterm=Int32.Parse(txtMidterm.Text);
finalexam=Int32.Parse(txtFinal.text);
}
catch
{
txtResult.Text="any mark has not been written";
}
average= midterm*30/100+finalexam*70/100;
if(average>=49.5 && finalexam>50)
{
txt.Result.Text="passed, average: "+average.To.String();
}
else
{
txtResult.Text="makeup stayed";
}
try
{
makeupexam=Int32.Parse(txtMakeUpExam.Text);
}
catch
{
txt.Result.Text="MakeUp's mark has not been written";
}
average= midterm*30/100+makeupexam*70/100;
if(average>=49.5 && makeupexam>50)
{
txtResult.Text="Passed: " + average;
}
else
{
txtResult.Text="failed, average: ", average;
}

The program is saying" use of unassigned local variable 'midterm,finalexam,makeupexam" please help me thank you all from now : )

score 1 · Answer 1 · edited Oct 02 '14 at 10:40

1

You are trying to use the variable but they may never have values assigned to them. Set them to 0 at the start and it should work.

edited Oct 02 '14 at 10:40

Neel

11,625
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answered Oct 02 '14 at 09:34

David Pilkington

13,528
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score 0 · Answer 2 · answered Oct 02 '14 at 09:35

0

Change your variable declaration:

int midterm = 0,finalexam = 0,makeupexam = 0;
double average = 0.0;

This occur because if you fail in your catch the variable never assign and you cannot perform actions on unassigned varible

answered Oct 02 '14 at 09:35

AsfK

3,328
4
36
73

score 0 · Accepted Answer · answered Oct 02 '14 at 09:35

Local variables aren't initialized. You have to manually initialize them.

local variables don't have a default value.

Just add below code :-

int midterm = 0,finalexam = 0,makeupexam = 0;
double average = 0.0;

its happening because you have not assigned value to the variables.

Use of unassigned local,error

3 Answers3