stdlib.h

The stdlib.h header file provides groups of functions for string conversion, pseudorandom number generation, memory management, environment communication, searching and sorting, multibyte character conversion, and integer arithmetic.

• Numeric Conversion
  
  
• Memory Management
  
  
• Environment Communication
  
  
• Searching and Sorting
  
  
• Integer Arithmetic
  
  
• Wide-Character and Multibyte Character Conversion