C
C#•4w ago
Mathall

How to set a variable = to itself + another variable

Hello, im completely new to C#, and still trying to learn the basics, I'm trying to create an average finder, and have all the users values be put into a list to be added together. However it's telling me that i cannot use the same variable as it is "an unassigned local variable", any help and tips would be appreciates 
C#
for(int i = 0; i < numCount; i++) {
                double preSum = preSum + numberList[i];
            }
C#
for(int i = 0; i < numCount; i++) {
                double preSum = preSum + numberList[i];
            }
1 Reply
Mathall
Mathall•4w ago
the second preSum is what is being called the unassigned local variable
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