Other Standard C Functions

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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 enviornment information about a variable
longjmp start execution at a certain point in the program
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 perform a system call
va_arg use variable length parameter lists