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spawnvp() Execute Program Using Arg Array, PATH
#include <process.h>
#include <stdio.h>
int spawnvp(modeflag,pathname,argv);
int modeflag; execution mode for parent process
char *pathname; path name of file to be executed
char *argv[]; Array of pointers to arguments
spawnvp() operates identically to spawnv(), with one exception: If
'pathname' is not found as described in spawnv(), then spawnvp() will
use the DOS PATH to continue the search for pathname. With that
single exception, the two functions are identical; see spawnv() for a
complete description.
-------------------------------- Example ---------------------------------
The following statements transfer execution to the child process
"child.exe" and pass it the three arguments "child", "arg1", and
"arg2". "child.exe" can be in the current directory or any PATH
directory. The exit status of the child is printed upon return.
#include <process.h> /* for 'spawnvp' and 'P_WAIT' */
#include <stdio.h> /* for 'printf' and 'NULL' */
#include <stdlib.h> /* for 'errno' */
#include <errno.h> /* for 'ENOENT' and 'ENOMEM' */
char *args[] = {"child", "arg1", "arg2", NULL};
main()
{
int result;
result = spawnvp(P_WAIT, "child.exe", args);
if (result != -1)
printf("exit status of child.exe = %d\n", result);
else {
if (errno == ENOENT) {
printf("child.exe not found in current directory,\n");
printf(" or in any PATH directory.\n");
} else if (errno == ENOMEM)
printf("not enough memory to execute child.exe\n");
else
printf("error #%d trying to spawn child.exe\n", errno);
}
}
See Also:
spawnv()
spawn...()
exec...()
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