lt49.c

经典c语言书

# include "stdio.h"
 void main( )
 {
 char s;
 printf ("I;m in  main. \n");
 a ( );
 printf ("I;m finally back in main. \n"); 
 }

 a ( )
 { printf ("Now , I;m in a. \n");
 b ( );
 printf ("Here, I;m back in a.\n");}
 b ( )
 { printf ("Now ,I;m in b. \n");
 c ( );
 printf ( "Back in b.\n");
  }
 c ( )
 { printf ("And now, I;m in c .\n"); }