Introduction of C Language

Header Files •A header file is a file with extension  [.h ]  which contains C function declarations and macro      definitions to be shared between several source files. •There are two types of header files: the files that the programmer writes and the files that comes with your compiler. •Commonly used are:stdio.h,conio.h, math.h, stdlib.h, float.h etc. ads Most Common Header files Used in the C program and there functions are as follow-: List of inbuilt C functions in stdio.h file:- printf()-:  This function is used to print the character, string, float, integer, octal and hexadecimal values onto the output screen scanf()-:  This function is used to read a character, string, numeric data from keyboard. getc()-:  It reads character from file gets()-:  It reads line from keyboard getchar()-:  It reads character from keyboard puts()-:  It writes line to o/p screen putchar()-:  It writes a character to scree...