tweaked comments and includes

src/caesarcrypt.c

@@ -29,10 +29,7 @@ int main()
 	fgets(buf, 3, stdin);
 	int choice = strtol(buf, NULL, 10);
 	
-	//char* msg = calloc(128, sizeof(char));
-
 	fputs("Enter your message text: ", stdout);
-	//if (msg) fgets(msg, 128, stdin);
 	char* msg = dyninput_str(INT64_MAX);
 
 	fputs("Enter your key (shift value): ", stdout);

src/crypt.c

@@ -12,6 +12,12 @@
 #include <stdbool.h>
 
 
+/* 
+  *	For built in C mod operator (%) -1 % 26 == -1
+  * For the requirements of this algorithm -1 mod 26 == 25 is required
+  * The below functions accomplish this
+*/
+
 // Which of the two below functions is faster (find out!)
 inline int mod(int a, int b)
 {
@@ -26,6 +32,11 @@ inline int fast_mod(int a, int b)
 }
 
 
+/*
+  *	65 - 90	 = ASCII 'A' - 'Z'
+  *	97 - 122 = ASCII 'a' - 'z'
+*/
+
 inline bool isupper(char c)
 {
 	return c >= 'A' && c <= 'Z';