Initial commit

1 files changed, 53 insertions, 0 deletions

diff --git a/one/char.c b/one/char.c
new file mode 100644
index 0000000..91cfc75
--- /dev/null
+++ b/one/char.c
@@ -0,0 +1,53 @@
+#include <stdio.h>
+
+#define IN 1 /* inside of a word */
+#define OUT 0 /* outside of a word */
+
+/* count lines, words, and characters */
+void
+wc()
+{
+	/*
+	 * c must be big enough to hold any value getchar() returns so we use
+	 * int instead of char to hold EOF, an integer defined in stdio
+	 */
+	int c, nl, nw, nc, state;
+	state = OUT;
+	nl = nw = nc = 0;
+	while ((c = getchar()) != EOF) {
+		++nc;
+		if (c == '\n') {
+			++nl;
+		}
+		/* && is higher precedence than || */
+		if (c == ' ' || c == '\t' || c == '\n') {
+			state = OUT;
+		} else if (state == OUT) {
+			state = IN;
+			++nw;
+		}
+	}
+	printf("%d %d %d\n", nl, nw, nc);
+}
+
+/* print input separated by new lines */
+void
+print_word_line()
+{
+	int c;
+	while ((c = getchar()) != EOF) {
+		if (c == ' ' || c == '\t' || c == '\n') {
+			putchar('\n');
+		} else {
+			putchar(c);
+		}
+	}
+}
+
+int
+main()
+{
+	wc();
+	/* print_word_line(); */
+	return 0;
+}