tirando espacos e colocando texto em minusculo

Makefile

 CC = g++
-CFLAGS = -Wall
+CFLAGS = -Wall -std=c++11 -std=gnu++11
 
 INCL = -I ./include
 
@@ -12,7 +12,7 @@ EXEC = playunfair
 $(EXEC): $(OBJ)
 	$(CC) $(CFLAGS) -o $@ $^
 
-%.o: %.c $(DEPS)
+%.o: %.cpp $(DEPS)
 	$(CC) $(CFLAGS) -c -o $@ $< $(INCL)
 
 all: $(EXEC)

include/playfair.h

@@ -3,7 +3,7 @@
 #include <vector>
 #include <iterator>
 #include <sstream>
-#include <cctype>
+#include <algorithm>
 
 std::vector< char > createKM ( const std::string key);
 std::string playfair(std::string text , const std::string key );

playunfair.cpp

 #include "include/playfair.h"
 #include <fstream>
-#include <algorithm>
 
 void parser(std::string &text){
 	text.erase(std::remove(text.begin(), text.end(), ' '), text.end());
-	//for(const char &
+	std::transform(text.begin(), text.end(), text.begin(), ::tolower);
 }
 
 int main(int argc, char *argv[]){