hi all
i'm coding an evaluator program.in these program i'm taking a equation with x parameter.the equation is str1 and the x parameter is ara.ara is char.the code is below.but i cant replace the x parameter with ara.where's the mistake
while
(index < str1.Length){
c = str1.Substring(index, 1);
if (c=="x"){
str1.Replace(
'x',ara); MessageBox.Show(str1);}
index++;
}

how can i change the string?
h1
str1 = str1.Replace('x'.ara);
Yaakov Ellis
Also, the rest of the code snippet (manually searching the string for an "X") is pointless. The replace it going to do it's own search (and not replace anything of no "x" is found). The entire thing can be replace with just
str1 = str1.Replace("x", ara);