Writing to a csv file in c

Hi,

I know the basics of how to write data into a csv file usinf fprintf() with "," separated values.My problem is when i do that in the result file the data is coming properly in different colums but it is not properly aligned.And also I require to add more than one value in a single field of the csv file.Manually we do "ALT+ENTER" to enter multiple values in one field..I am having a hard time to figure this out..Can anayone help please??