| abort | stops the program | 
	
		| assert | stops the program if an expression isn't true | 
	
		| atexit | sets a function to be called when the program exits | 
	
		| bsearch | perform a binary search | 
	
		| exit | stop the program | 
	
		| getenv | get environnment information about a variable | 
	
		| longjmp | start execution at a certain point in the program | 
	
		| putenv | add/modify the environmental settings | 
	
		| qsort | perform a quicksort | 
	
		| raise | send a signal to the program | 
	
		| rand | returns a pseudorandom number | 
	
		| setjmp | set execution to start at a certain point | 
	
		| signal | register a function as a signal handler | 
	
		| srand | initialize the random number generator | 
	
		| system | have the default command interpreter execute a command | 
	
		| va_arg | use variable length parameter lists |