SAP Software Engineer interview questions

What are some of the types of pointers?

1: You must build houses on both sides of the road and no 2 houses must be adjacent i.e. there must be at least 1 free plot between any 2 house. example: i/p: 3 (no. of plots) o/p: 25 (no. of ways to build a street) explanation y-house,x-free plot possible ways to design - xyx yxy yxx xxy xxx Since they will be built on both sides of the road, possible no of ways will be 5*5=25 2: Check for duplicate digits in a number 3: What will be the output of “printf(“%d”)” 4:Error handling in C. “errno() and perror()” 5: malloc and calloc 6: Questions related to OOPS 7: Questions related to software engineering SDLC and different models