1 #include <stdio.h> 2 3 #define T_INIT 0100 4 #define T_STOP 0111 5 6 long charin; /* number of input character */ 7 8 main(argc, argv) 9 char **argv; 10 { 11 12 int npages = 0; 13 register int c; 14 15 while((c=getchar()) != EOF) { 16 charin++; 17 c &= 0377; 18 if(c != T_INIT) 19 continue; 20 else { 21 c=getchar(); 22 c &= 0377; 23 if(c == T_STOP) { 24 npages++; 25 charin++; 26 } 27 } 28 } 29 if(charin<5) { 30 fprintf(stderr, "%s: no input\n", argv[0]); 31 exit(1); 32 } 33 printf("%d\n", npages); 34 } 35