From 4c87139ab0ec0d6f6412d7e4bff59517163cd134 Mon Sep 17 00:00:00 2001
From: Dan Buch <daniel.buch@gmail.com>
Date: Tue, 13 Sep 2011 23:05:09 -0400
Subject: [PATCH] handling all args passed

---
 ex13.c | 71 ++++++++++++++++++++++++++++++----------------------------
 1 file changed, 37 insertions(+), 34 deletions(-)

diff --git a/ex13.c b/ex13.c
index 8ec6454..33356ad 100644
--- a/ex13.c
+++ b/ex13.c
@@ -2,55 +2,58 @@
 
 int main(int argc, char *argv[])
 {
-    if(argc != 2) {
-        printf("ERROR: You need one argument.\n");
+    if (argc < 2) {
+        fprintf(stderr, "ERROR: You must provide at least one argument.\n");
         return 1;
     }
 
-    int i = 0;
+    int i;
+    int argn;
+
     char letter;
     int up_low_sep = (int)('a' - 'A');
     int upper_floor = (int)'A';
     int upper_ceil = (int)'Z';
 
-    for(i = 0; '\0' != (letter = argv[1][i]); i++) {
-        char letter = argv[1][i];
-        int i_letter = (int)letter;
-        if (upper_floor < i_letter && i_letter < upper_ceil) {
-            letter = (char)(i_letter + up_low_sep);
-        }
+    for(argn = 1; argn < argc; argn++) {
+        for(i = 0; '\0' != (letter = argv[argn][i]); i++) {
+            int i_letter = (int)letter;
+            if (upper_floor < i_letter && i_letter < upper_ceil) {
+                letter = (char)(i_letter + up_low_sep);
+            }
 
-        switch(letter) {
-            case 'a':
-                printf("%d: 'a'\n", i);
-                break;
+            switch(letter) {
+                case 'a':
+                    printf("%d: 'a'\n", i);
+                    break;
 
-            case 'e':
-                printf("%d: 'e'\n", i);
-                break;
+                case 'e':
+                    printf("%d: 'e'\n", i);
+                    break;
 
-            case 'i':
-                printf("%d: 'i'\n", i);
-                break;
+                case 'i':
+                    printf("%d: 'i'\n", i);
+                    break;
 
-            case 'o':
-                printf("%d: 'o'\n", i);
-                break;
+                case 'o':
+                    printf("%d: 'o'\n", i);
+                    break;
 
-            case 'u':
-                printf("%d: 'u'\n", i);
-                break;
+                case 'u':
+                    printf("%d: 'u'\n", i);
+                    break;
 
-            case 'y':
-                if (i > 2) {
-                    printf("%d: 'Y'\n", i);
-                } else {
-                    printf("%d: 'Y' isn't a vowel this time\n", i);
-                }
-                break;
+                case 'y':
+                    if (i > 2) {
+                        printf("%d: 'Y'\n", i);
+                    } else {
+                        printf("%d: 'Y' isn't a vowel this time\n", i);
+                    }
+                    break;
 
-            default:
-                printf("%d: '%c' is not a vowel\n", i, letter);
+                default:
+                    printf("%d: '%c' is not a vowel\n", i, letter);
+            }
         }
     }