header files in C language
1 stdio.h
Input/Output functions
2 conio.h
Console Input/Output functions
3 stdlib.h
General utility functions
4 math.h
Mathematics functions
5 string.h
String functions
6 ctype.h
Character handling functions
7 time.h
Date and time functions
8 float.h
Limits of float types
9 limits.h
Size of basic types
10 wctype.h
Functions to determine the type contained in wide character data
