Adding Two Columns in Excel using a Macro
First to go Visual Basic Editor follow these steps
1) Press ALT+F11
2)Insert->Module
3)In the Module paste this code
Sub s()
'Declaring variables
Dim i As Integer
Dim j As Integer
For i = 1 To 100
'Looping from 1 to 100 Columns
'Adding contents in Column1 and Column 2
a = Sheet1.Cells(i, 1) + Sheet1.Cells(i, 2)
'Storing the Result in Column 3
Sheet1.Cells(i, 3) = a
End Sub
This code works only when data is stored in first column and second column,you can modify this code to add any two columns ,to modify it just do like this
Sheet1.Cells(i,Columnnumber)
In the column number you should put your own column numberand sameis thecase with row number also
To change the row number just replace i=1 in the for Loop with your own number