7.2: initial commit

1 files changed, 50 insertions, 0 deletions

diff --git a/7.2/main.c b/7.2/main.c
new file mode 100644
index 0000000..f11256e
--- /dev/null
+++ b/7.2/main.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <ctype.h>
+#include "getch.h"
+
+#define MAXLINE	80
+#define OCTLEN	6
+
+int inc(int col, int n);
+
+int main(void)
+{
+	char c, col, next;
+
+	col = 0;
+	while ((c = getch()) != EOF) {
+		if (iscntrl(c) || isblank(c)) {
+			col = inc(col, OCTLEN);
+			printf(" \\%03o ", c);
+
+			if (c == '\n') {
+				col = 0;
+				putchar(c);
+			}
+		} else {
+			col = inc(col, 1);
+			/* ac-
+			 * k */ 
+			ungetch(next = getch());
+			if (col == MAXLINE && isalpha(c) &&
+			    isalpha(next)) {
+				ungetch(c);
+				c = '-';
+			}
+
+			putchar(c);
+		}
+	}
+
+	return 0;
+}
+
+int inc(int col, int n)
+{
+	if (col + n > MAXLINE) {
+		putchar('\n');
+		return n;
+	} else {
+		return col + n;
+	}
+}