Changed extensions from C style to C++ style

Makefile

@@ -1,7 +1,7 @@
 GPP = g++ -Wall -std=c++17
 
-sloth: src/main.c src/parser/lex.yy.o src/parser/parser.tab.o src/variables/environment.o src/variables/variable.o src/variables/value.o src/operations/node.o src/operations/operators.o src/string.o src/shell.o
-	$(GPP) src/main.c src/parser/lex.yy.o src/parser/parser.tab.o src/variables/environment.o src/variables/variable.o src/variables/value.o src/operations/node.o src/operations/operators.o src/string.o src/shell.o -ledit -o sloth
+sloth: src/main.cpp src/parser/lex.yy.o src/parser/parser.tab.o src/variables/environment.o src/variables/variable.o src/variables/value.o src/operations/node.o src/operations/operators.o src/string.o src/shell.o
+	$(GPP) src/main.cpp src/parser/lex.yy.o src/parser/parser.tab.o src/variables/environment.o src/variables/variable.o src/variables/value.o src/operations/node.o src/operations/operators.o src/string.o src/shell.o -ledit -o sloth
 src/parser/lex.yy.o: src/parser/lex.yy.c src/parser/parser.tab.h 
 	$(GPP) -c src/parser/lex.yy.c -o src/parser/lex.yy.o
 src/parser/parser.tab.o: src/parser/parser.tab.c
@@ -12,18 +12,18 @@ src/parser/parser.tab.c: src/parser/parser.y
 	bison -d -o src/parser/parser.tab.c src/parser/parser.y
 src/parser/lex.yy.c: src/parser/lexer.l
 	flex -o src/parser/lex.yy.c src/parser/lexer.l
-src/variables/environment.o: src/variables/environment.h src/variables/environment.c
-	$(GPP) -c src/variables/environment.c -o src/variables/environment.o
-src/variables/variable.o: src/variables/variable.h src/variables/variable.c
-	$(GPP) -c src/variables/variable.c -o src/variables/variable.o
-src/variables/value.o: src/variables/value.h src/variables/value.h
-	$(GPP) -c src/variables/value.c -o src/variables/value.o
-src/operations/operators.o: src/operations/operators.h  src/operations/operators.c
-	$(GPP) -c src/operations/operators.c -o src/operations/operators.o
-src/operations/node.o: src/operations/node.h src/operations/node.c
-	$(GPP) -c src/operations/node.c -o src/operations/node.o
-src/shell.o: src/shell.h src/shell.c
-	$(GPP) -c src/shell.c -o src/shell.o
+src/variables/environment.o: src/variables/environment.hpp src/variables/environment.cpp
+	$(GPP) -c src/variables/environment.cpp -o src/variables/environment.o
+src/variables/variable.o: src/variables/variable.hpp src/variables/variable.cpp
+	$(GPP) -c src/variables/variable.cpp -o src/variables/variable.o
+src/variables/value.o: src/variables/value.hpp src/variables/value.cpp
+	$(GPP) -c src/variables/value.cpp -o src/variables/value.o
+src/operations/operators.o: src/operations/operators.hpp  src/operations/operators.cpp
+	$(GPP) -c src/operations/operators.cpp -o src/operations/operators.o
+src/operations/node.o: src/operations/node.hpp src/operations/node.cpp
+	$(GPP) -c src/operations/node.cpp -o src/operations/node.o
+src/shell.o: src/shell.hpp src/shell.cpp
+	$(GPP) -c src/shell.cpp -o src/shell.o
 src/string.o: src/string.h src/string.c
 	$(GPP) -c src/string.c -o src/string.o
 clean:

src/main.cpp

@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include "sloth.h"
-#include "shell.h"
+#include "sloth.hpp"
+#include "shell.hpp"
 
 void interpret_file(char* fileName);
 

src/operations/node.cpp

@@ -2,12 +2,12 @@
 #include <stdlib.h>
 #include <string>
 #include <assert.h>
-#include "node.h"
-#include "operators.h"
-#include "../constants.h"
+#include "node.hpp"
+#include "operators.hpp"
+#include "../constants.hpp"
 #include "../parser/parser.tab.h"
-#include "../variables/value.h"
-#include "../variables/variable.h"
+#include "../variables/value.hpp"
+#include "../variables/variable.hpp"
 
 /* creates a new node and returns it */
 struct Node* make_node(int type, struct Value* value, std::string id) {

src/operations/node.hpp

@@ -2,8 +2,8 @@
 #define NODE_H
 
 #include <string>
-#include "../variables/value.h"
-#include "../variables/environment.h"
+#include "../variables/value.hpp"
+#include "../variables/environment.hpp"
 
 #define ID_SIZE 100
 #define MAX_CHILDREN 3

src/operations/operators.cpp

@@ -1,8 +1,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include "operators.h"
-#include "../variables/value.h"
+#include "operators.hpp"
+#include "../variables/value.hpp"
 
 struct Value* add(struct Value* x, struct Value* y) {
   if (!x || !y) { fprintf(stderr, "Error, uninitialized values being used in add.\n"); }

src/operations/operators.hpp

@@ -1,6 +1,6 @@
 #ifndef OPERATORS_H
 #define OPERATORS_H
-#include "../variables/value.h"
+#include "../variables/value.hpp"
 
 struct Value* add(struct Value* x, struct Value* y);
 struct Value* subtract(struct Value* x, struct Value* y);

src/parser/lexer.l

@@ -1,8 +1,8 @@
 %{
 #include <stdio.h>
 #include <string.h>
-#include "../operations/node.h"
-#include "../variables/value.h"
+#include "../operations/node.hpp"
+#include "../variables/value.hpp"
 #include "parser.tab.h"
 #include "../string.h"
 

src/parser/parser.y

@@ -1,9 +1,9 @@
 %{
 #include <stdio.h>
 #include <stdlib.h>
-#include "parser.h"
-#include "../operations/node.h"
-#include "../constants.h"
+#include "parser.hpp"
+#include "../operations/node.hpp"
+#include "../constants.hpp"
 
 %}
 

src/shell.cpp

@@ -1,10 +1,10 @@
 #include <stdio.h>
 #include <string.h>
-#include "shell.h"
-#include "parser/parser.h"
-#include "variables/environment.h"
-#include "operations/node.h"
-#include "constants.h"
+#include "shell.hpp"
+#include "parser/parser.hpp"
+#include "variables/environment.hpp"
+#include "operations/node.hpp"
+#include "constants.hpp"
 
 
 // For keeping track of command history

src/sloth.h

@@ -1,12 +0,0 @@
-#ifndef SLOTH_H
-#define SLOTH_H
-
-#include "constants.h"
-#include "operations/node.h"
-#include "variables/value.h"
-#include "variables/variable.h"
-#include "variables/environment.h"
-#include "parser/parser.h"
-#include "parser/parser.tab.h"
-
-#endif

src/sloth.hpp

@@ -0,0 +1,12 @@
+#ifndef SLOTH_H
+#define SLOTH_H
+
+#include "constants.hpp"
+#include "operations/node.hpp"
+#include "variables/value.hpp"
+#include "variables/variable.hpp"
+#include "variables/environment.hpp"
+#include "parser/parser.hpp"
+#include "parser/parser.tab.h"
+
+#endif

src/variables/environment.cpp

@@ -1,8 +1,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include "environment.h"
-#include "variable.h"
+#include "environment.hpp"
+#include "variable.hpp"
 
 struct Environment* create_environment(void) {
   struct Environment* env = new Environment();

src/variables/value.cpp

@@ -1,5 +1,5 @@
 #include <stdlib.h>
-#include "value.h"
+#include "value.hpp"
 #include <string>
 #include <iostream>
 #include "../parser/parser.tab.h"

src/variables/variable.cpp

@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include "variable.h"
+#include "variable.hpp"
 
 /* creates a new variable and returns it */
 struct Variable* make_variable(char* id, struct Value* value) {

src/variables/variable.hpp

@@ -1,7 +1,7 @@
 #ifndef VARIABLE_H
 #define VARIABLE_H
 
-#include "../operations/node.h"
+#include "../operations/node.hpp"
 
 struct Variable {
   char id[ID_SIZE];