1 files changed, 0 insertions, 78 deletions
diff --git a/wk2/pset2/caesar/caesar.c b/wk2/pset2/caesar/caesar.c
deleted file mode 100644
index 70b4544..0000000
--- a/wk2/pset2/caesar/caesar.c
+++ /dev/null
@@ -1,78 +0,0 @@
-#include <cs50.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-
-bool only_digits(string phrase);
-int rotate(char c, int i);
-
-
-int main(int argc, string argv[])
-{
-    if (argc != 2 || only_digits(argv[1]) == false) {
-        printf("Usage: ./caesar key\n");
-        return 1;
-    } else {
-        int key = (atoi(argv[1])) % 26;
-        string plain = get_string("plaintext: ");
-        int plainlen = strlen(plain);
-        int cypher[plainlen];
-        printf("ciphertext: ");
-        for (int i = 0; i < plainlen; i++) {
-            cypher[i] = rotate(plain[i], key);
-            printf("%c", cypher[i]);
-        }
-        printf("\n");
-    }
-}
-
-
-bool only_digits(string phrase) {
-    for (int i = 0; phrase[i] != '\0'; i++) {
-        if (47 > phrase[i] || phrase[i] > 58) {
-            return false;
-        }
-    }
-    return true;
-}
-
-
-int rotate(char c, int i) {
-    if ((64 < c && c < 91) || (96 < c && c < 123)) {
-        c += i;
-        if (64 >= c || (c >= 91 && 96 >= c) || c >= 123) {
-            c -= 26;
-        }
-    }
-    return c;
-}
-
-
-
-/*
-Your program must accept a single command-line argument, a non-negative integer. Let’s call it *k*
-    for the sake of discussion.
-If your program is executed without any command-line arguments or with more than one command-line
-    argument, your program should print an error message of your choice (with printf) and return from
-    main a value of 1 (which tends to signify an error) immediately.
-If any of the characters of the command-line argument is not a decimal digit, your program should print
-    the message Usage: ./caesar key and return from main a value of 1.
-Do not assume that k will be less than or equal to 26. Your program should work for all non-negative
-    integral values of k less than 2^31-26. In other words, you don’t need to worry if your program eventually
-    breaks if the user chooses a value for k that’s too big or almost too big to fit in an int. (Recall
-    that an int can overflow.) But, even if k is greater than 26, alphabetical characters in your program’s
-    input should remain alphabetical characters in your program’s output. For instance, if k is 27, A should
-    not become \ even though \ is positions away from A in ASCII, per asciitable.com; A should become B,
-    since B is 27 positions away from A, provided you wrap around from Z to A.
-Your program must output plaintext: (with two spaces but without a newline) and then prompt the user for
-    a string of plaintext (using get_string).
-Your program must output ciphertext: (with one space but without a newline) followed by the plaintext’s
-    corresponding ciphertext, with each alphabetical character in the plaintext “rotated” by k positions;
-    non-alphabetical characters should be outputted unchanged.
-Your program must preserve case: capitalized letters, though rotated, must remain capitalized letters;
-    lowercase letters, though rotated, must remain lowercase letters.
-After outputting ciphertext, you should print a newline. Your program should then exit by returning 0
-    from main.
-*/