IAS officer grade exam and software engineering are completely different options for career.. According to me IAS officer post is a very good choice and reputed post for better future .. software engineering will also provides you better career options with good salary packages ..

It is completely depends on your own interest and ability choose between IAS and software engineering ..
If you are interested in software engineering fields than go for software engineering course ,but if you have interest in IAS officer post than you have to apply for IAS examination ..

books name of study for Become an IAS

I.A.S --- INDIAN ADMINISTRATIVE SERVICES

IAS civil service examination by Kumud Ranjan Singh

IAS Prelims by Disha experts

UPSC portal CSAT manual by Sachchide Nand Jha

IAS solved papers by Expert Compilations