Added tolower() calls

brute.cc

@@ -5,7 +5,7 @@ void shift(char* text, int key)
 	std::cout << key << ": ";
 	for(int i = 0; text[i] != 0; ++i)
 	{
-		char c = text[i]-key;
+		char c = std::tolower(text[i])-key;
 		if(c < 'a') c+=26;
 		if(c > 'z') c-=26;
 		std::cout << c;

shift.cc

@@ -1,4 +1,5 @@
 #include <iostream>
+#include <cctype>
 
 int main(int argc, char** argv)
 {
@@ -14,7 +15,7 @@ int main(int argc, char** argv)
 	
 	for(int i = 0; text[i] != 0; ++i)
 	{
-		char c = text[i]+key;
+		char c = std::tolower(text[i])+key;
 		if(c < 'a') c+=26;
 		if(c > 'z') c-=26;
 		std::cout << c;

vigenere.cc

@@ -2,7 +2,7 @@
 
 int keyvalue(char c)
 {
-	return c - 'a';
+	return std::tolower(c) - 'a';
 }
 int main(int argc, char** argv)
 {
@@ -20,7 +20,7 @@ int main(int argc, char** argv)
 	int ki = 0;
 	for(int pi = 0; text[pi] != 0; ++pi)
 	{
-		char c = text[pi] + keyvalue(key[ki]);
+		char c = std::tolower(text[pi]) + keyvalue(key[ki]);
 		if(c < 'a') c+=26;
 		if(c > 'z') c-=26;
 		std::cout << c;