visual studio - c# console application unassigned local variable -


this question has answer here:

        int valueone, valuetwo, numchar, total;     console.writeline("this program doing of 4 mathematical proccesses");     console.writeline("you can add , substract , divide , multiply");     console.writeline("when asked please type values or proccesses want.");     console.writeline("please type first value");     valueone = convert.toint32((console.readline()));     console.writeline("please type second value");     valuetwo = convert.toint32((console.readline()));     console.writeline("please enter number of proccess/character want meaning (1 = +) , (2 = -) , (3 = *) , (4 = /)");     numchar = convert.toint32((console.readline()));     if (numchar == 1)         total = valueone + valuetwo;     if (numchar == 2)         total = valueone + valuetwo;     if (numchar == 3)         total = valueone * valuetwo;     if (numchar == 4)         total = valueone / valuetwo;     console.writeline("the total :");     console.writeline(total);     console.readline();

the console.writeline(total); @ end apparently unassigned local variable , though should assigned lines beneath "if" lines, note i'm new in visual studio , started taking courses , , don't think duplicate because other post's fix didn't work me.

let's code didn't produce error, , compiled , ran. think happen if numchar wasn't 1, 2, 3, or 4?

your code never reach of statements in ifs there, , never assign initial value total. since entirely possible given program (and impossible check in general -- see halting problem), error substantiated , necessary.


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