Length of last word

Signed-off-by: Leo Ma <[email protected]>

058_length_of_last_word/Makefile

@@ -0,0 +1,2 @@
+all:
+	gcc -O2 -o test word_length.c

058_length_of_last_word/word_length.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int lengthOfLastWord(char *s)
+{
+    int len = 0;
+    while (*s != '\0') {
+        if (s[-1] == ' ' && s[0] != ' ') {
+            len = 1;
+        } else if (*s != ' ') {
+            len++;
+        }
+        s++;
+    }
+    return len;
+}
+
+int main(int argc, char **argv)
+{
+    if (argc != 2) {
+        fprintf(stderr, "Usage: ./test word\n");
+        exit(-1);
+    }
+
+    printf("%d\n", lengthOfLastWord(argv[1]));
+    return 0;
+}