Why is C standard library needed?
C Standard Library:
C would have been a tough programming language in absence of the standard library. The standard library in C contains header files and standard functions in these files. Header files are collection of macros, types, functions and constants. Any program that needs those functions has to contain these header files. For example, the standard library functions, included in "stdlib.h" header file, are used for number conversions, storage allocation and other functions on the same line.