1 #ifndef lint 2 static char sccsid[] = "@(#)getnum.c 1.1 (Berkeley) 06/08/88"; 3 #endif not lint 4 5 #include <stdio.h> 6 7 getnum() 8 { 9 int c, n; 10 11 n = 0; 12 while ((c=getchar()) >= '0' && c <= '9') 13 n = n*10 + c - '0'; 14 if (c == EOF) 15 return(-1); 16 return(n); 17 } 18