Load and execute a child process within the current program memory.

This function is compatible with the following targets:

ANSI

BeOS

EMB/RTOS

Mac OS

Palm OS

Win32

On the Macintosh, all exec family calls pass through exec(), because argument passing (argc, argv) doesn't exist for Mac application.

#include <unistd.h>

int exec(const char *path, ...);

int execl(const char *path, ...);

int execle(const char *path, ...);

int execlp(const char *path, ...);

int execv(const char *path, ...);

intexecve(const char *path, ...);

int excevp(const char *path, ...);

Parameters for this facility are:

path	const char *	The commandline pathname to execute
...		A variable list of arguments

UNIX Function	On the Macintosh System
#define execl	exec
#define execv	exec
#define execle	exec
#define execve	exec
#define execlp	exec
#define execvp	exec

Launches the application named and then quits upon successful launch. Example of usage is given in "Example of exec() usage.."

If successful exec() returns zero. If unsuccessful exec() returns negative one and sets errno according to the error.

"Overview of SIOUX"

"Overview of errno.h"

#include <stdio.h>
#include <SIOUX.h>
#include <unistd.h>


#define SIZE FILENAME_MAX
char appName[SIZE] = "Macintosh HD:SimpleText";

int main(void)
{ 
	SIOUXSettings.autocloseonquit = 1;
	SIOUXSettings.asktosaveonclose = 1;

	printf("Original Program\n");  
	exec(appName);
	printf("program terminated"); /* not displayed */

	return 0;
}
result
Display "Original Program"  
after the close of the program 
the SimpleText application is launched





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Last updated: August 16, 2000