hi all,

while going through a sample program i came across the function putenv();. i
would like to know whether any environment variables will be set before my
program is launched, if yes how can i find out a list of them.

i have another doubt, since environment variables are like name=value why
can't we simply use program variables (maybe global variables). it will be
great if somebody can tell me an exact scenario to use an environment

thanks in advance,

srikanth d
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