Word counting example

09-word-count.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+#define IN  1
+#define OUT 0
+
+/* count lines, words, and characters in input */
+int main()
+{
+	int c, nl, nw, nc, state;
+
+	state = OUT;
+	nl = nw = nc = 0;
+	while ((c = getchar()) != EOF) {
+		++nc;
+		if (c == '\n')
+			++nl;
+		if (c == ' ' || c == '\n' || c == '\t')
+			state = OUT;
+		else if (state == OUT) {
+			state = IN;
+			++nw;
+		}
+	}
+	printf("%d %d %d\n", nl, nw, nc);
+}