C Wait

A function that waits until a process finishes.

pid_t wait(int wstatus)

Example

pid_t child_pid, wpid;
int status = 0;
 
//Father code (before child processes start)
 
for (int id=0; id<n; id++) {
    if ((child_pid = fork()) == 0) {
        //child code
        exit(0);
    }
}
 
while ((wpid = wait(&status)) > 0); // this way, the father waits for all the child processes 
 
//Father code (After all child processes end)