Many widely used languages that came after C such as C#, PHP, Java, LPC, JavaScript and Unix's Shell are directly or indirectly influenced by C. Syntactical has been the most permeating influence in that all of the languages mentioned above come together with, more or less recognizably, expression syntax of C and the statement. On the other hand, data models, type systems, and/or large scale program structures are different, sometimes radically, from those of C. It continues to be one of the most influential languages in the world, for the most part in the sphere of embedded systems.

C++ and Objective C: 

With the popularity of object oriented languages, it were C++ and Objective C that were two different extensions of C and the ones that provided objective oriented efficacies. Both of the languages were initially put into effect as source to source compilers, that is to say that source code was translated into C, and then compiled with a C compiler.

C++:

To make available object oriented functionality with syntax similar to C, Bjarne Stroustrup worked out the C++ programming language as one approach as C++ puts in superior scoping, typing strength, and other tools that are helpful in object-oriented programming and allows generic programming by means of templates. Almost a superset of C, C++ now braces most of C, with a few exemptions though.

Objective C:

Originally Objective C was quite a thin layer on top of C which allows object oriented programming by means of hybrid dynamic or static typing prototype. It still is a firm superset of C. Besides C from which Objective C inherits syntax that engrosses preprocessing, expressions, function declarations, and function calls, Objective C originally took the syntax for object oriented features from Smalltalk.

D:

The D language, which, in contrast to C++ that upholds just about entire backward compatibility with C, makes a clean split with C and at the same time, preserves the same broad spectrum syntax. What D does is dispose of a number of features of C, such as the C preprocessor and trigraphs, that the designer of D, Walter Bright, thought of as not necessary. However, not all, but some of D's extensions to C have some in common with those of C++.

Python:

One of the most important examples of a scripting language that has its origins deep in C is of Python. Although, Python's syntax is not the same as of C, it itself is written in C. Moreover, Python's being an open source program enables the programmers to expand Python with C, or embed it into programs that written in C. It is also due to the close connection with C that Python enjoys its success as a general use programming language.

Perl:

Another example is of Perl. Perl is different from Python in that its syntax closely follows the syntax of C. Moreover, not only Perl is written in C, it works quite fine with programs that have C extensions.