Similarities between C and C++ are:
*Both the languages have a similar syntax.
*Code structure of both the languages are same.
*The compilation of both the languages is similar.
*They share the same basic syntax. *Nearly all of C’s operators and keywords are also present in C++ and do the same thing.
*C++ has a slightly extended grammar than C, but the basic grammar is the same.
*Basic memory model of both is very close to the hardware.
*Same notions of stack, heap, file-scope and static variables are present in both the languages.
