how to load files from any directory in c programme
i want to change this code below for the inwashfile to be able to load from any directory instead of loa开发者_如何转开发ding from the tech_projects environmental variable.
/**Get projects directory from environment variable****************/
strcpy(pjects.arr, getenv("Tech_Projects"));
pjects.arr[strlen(pjects.arr)] = '\0';
if (strcmp(inwashfile.arr, "null") != 0)
{
for (d=2;d<inwashfile.len;d++)
{
tempfile.arr[d-2] = inwashfile.arr[d];
}
memset(inwashfile.arr, '\0', 255);
strcpy(inwashfile.arr, pjects.arr);
strcat(inwashfile.arr, tempfile.arr);
inwashfile.len = strlen(inwashfile.arr);
inwashfile.arr[inwashfile.len] = '\0';
do_wash[0] = 'T';
}
else
{
do_wash[0] = 'F';
}
printf("3\n");
do_wash[1] = '\0';
/**Get projects directory from environment variable****************/
/* You need to replace this line with wherever you want to get the
file name from. Either request it from the user, pull it from a
configuration file or read it from the command line */
strcpy(pjects.arr, getenv("Tech_Projects"));
/* this line does absolutely nothing. strlen() relies on the string
already being null-terminated */
pjects.arr[strlen(pjects.arr)] = '\0';
if (strcmp(inwashfile.arr, "null") != 0)
{
for (d=2;d<inwashfile.len;d++)
{
tempfile.arr[d-2] = inwashfile.arr[d];
}
memset(inwashfile.arr, '\0', 255);
strcpy(inwashfile.arr, pjects.arr);
strcat(inwashfile.arr, tempfile.arr);
inwashfile.len = strlen(inwashfile.arr);
inwashfile.arr[inwashfile.len] = '\0';
do_wash[0] = 'T';
}
else
{
do_wash[0] = 'F';
}
printf("3\n");
do_wash[1] = '\0';
It could be
strcpy(pjects.arr, argv[ 1 ] );
and the directory named could be passed from the command line, e.g.
$ myprogram /user/foo
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