# String Arrays

Discussion in 'C#' started by nagarjuna02, Feb 15, 2010.

1. ### nagarjuna02New Member

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hi
I am in a process of designing relational calculator.
If a user supplied a string like -3.33+44*456/2.2-3+4....
I want to store it in string array as
-3.33
+44
*
456
/
2.2
-3
+4
......
(that is *, /, +ve value, -ve value separately and in serial order into an string array)

This is the code I wrote:
string a = "-3.33+44*456/2.2-3"
string[] ip = new string;
int k = 0;

for (int i = 0; i < a.Length; i++)
{
if (a.Substring(i, 1) == "+" || a.Substring(i, 1) == "-" || a.Substring(i, 1) == "*" || a.Substring(i, 1) == "/" || a.Substring(i, 1) == "^")
{
for (int j = i + 1; j < a.Length; j++)
{
if (a.Substring(j, 1) == "+" || a.Substring(j, 1) == "-" || a.Substring(j, 1) == "*" || a.Substring(j, 1) == "/" || a.Substring(j, 1) == "^")
{
if (a.Substring(i, 1) == "+" || a.Substring(i, 1) == "-")
{
ip[k] = a.Substring(i, j-i);
k++;
}
else
{
ip[k] = a.Substring(i, 1);
k++;
ip[k] = a.Substring(i + 1, (j -i)-1);
k++;
}
i = j;
break;
}
}
}

}
But its not working properly:
Its storing only one element in the array.
From last two days I am braking my head.