Infosys System Engineer interview questions

My interview was taken by two members, initially they asked to introduce myself, followed by a bunch of questions on C++(which i'm good at), and asked me to write a program in that language, then they gave me a graph sheet(company report) to analyse and tell them the important points and also advise them(you being as Team Leader) as to how should they improve the situation.

There is only one main round for this position.that is Aptitude.i have never seen the difficulty like this.you should prepare rigorously for this thing.if u cleared this one means then HR round round that will be very easy(General).