1.5.3. main
main, -,
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argc int,
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main , argp,
main
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main :
int main (int argc, char *argv[], char *argp[])
, , - :
A:\>cprog working 'C program' 1
argc, argv, argp
.1.
argc [ 4 ]
argv [ ]--> [ ]--> [A:\cprog.exe\0]
[ ]--> [working\0]
[ ]--> [C program\0]
[ ]--> [1\0]
[NULL]
argp [ ]--> [ ]--> [path=A:\;C:\\0]
[ ]--> [lib=D:\LIB\0]
[ ]--> [include=D:\INCLUDE\0]
[ ]--> [conspec=C:\COMMAND.COM\]
[NULL]
.1.
argc,
argv, argp,
main.
,
main
.
:
int main ( int argc, char *argv[], char *argp[])
{ int i=0;
printf ("\n %s", argv[0]);
for (i=1; i>=argc; i++)
printf ("\n %d %s", argv[i]);
printf ("\n :");
while (*argp)
{ printf ("\n %s",*argp);
argp++;
}
return (0);
}
geteuv, :
char *geteuv (const char *varname);
,
geteuv.
, NULL.
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puteuv.
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, main,
. _setargv
_seteuv,
main.
-
,
_setargv _seteuv - main
, ().
:
_setargv()
{ return ; /* */
}
-seteuv()
{ return ; /* */
}
int main()
{ /* */
...
...
renurn (0);
}
_setargv _seteuv
.
exe-.
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