ex1-9 ex1-10

1 files changed, 36 insertions, 0 deletions

diff --git a/ex1-10.c b/ex1-10.c
new file mode 100644
index 0000000..0b0c018
--- /dev/null
+++ b/ex1-10.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+/* Track whether we are inside or outside a word */
+typedef enum _state {IN,OUT} state;
+
+/* true if c is a 'word' character (not a blank, space, or a tab)  */
+bool is_word(char c) {
+    return c != ' ' && c != '\t' && c != '\n';
+}
+
+/* Counts characters, lines, and words from stdin. 
+
+   'characters' are single byte characters. No handling for encodings in c standard lib.
+   'lines' are newline characters.
+   'words' are contiguous sequences of characters  other than space, tab, newline */
+int main(void) {
+    int c;
+    state s = OUT;
+    uint32_t cc = 0, lc = 0, wc = 0;
+    while ((c = getchar()) !=  EOF) {
+        cc++;
+        if (c == '\n') {
+            lc++;
+        }
+        if (!is_word(c)) {
+            s = OUT;
+        } else if (s == OUT) {
+            s = IN;
+            wc++;
+        }
+    }
+    printf("cc=%d lc=%d wc=%d\n", cc, lc, wc);
+    return 0;
+}
\ No newline at end of file