write a program so that one thread will print "hello ", one thread will print "world"and another thread will print the exclamation mark !, and the main function will print the trailing " ", using pthread_create(), pthread_exit(), pthread_yield(), and pthread_join()..

Hints & Tips: 1) You must use a synchronization method to ensure that the "world" thread runs after the "hello" thread.

2) You must use a synchronization method to assure that the main thread does not execute until after the "world" and exclamation threads.

/* Include Files */ #include /* External References */ extern int world( void ); extern int hello( void ); extern int exclamation(void); int main( int argc, char *argv[] ) { world(); hello(); exclamation(); printf( " " ); return( 0 ); } /* world - print the "world" part. */ int world( void ) { printf( "world" ); return 0 ; } /* hello - print the "hello" part. */ int hello( void ) { printf( "hello " ); return 0 ; } /* exclamation print !.*/ Int exclamation(){ Printf(!); Return 0; }