diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..f3f956c
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,16 @@
+#how to run it
+#http
+
+CC=gcc
+CFLAGS= -c -Wall
+LFLAGS1= -lm
+CFLAGS2= -std=c99 
+all: prog
+prog: calc.o  helpers.o
+	$(CC) calc.o helpers.o  -o prog $(LFLAGS1)
+calc.o: calc.c
+	$(CC) $(CFLAGS) calc.c
+helpers.o: helpers.c
+	$(CC) $(CFLAGS) helpers.c
+clean:
+	rm -rf *.o
diff --git a/calc b/calc
new file mode 100755
index 0000000..51f025d
Binary files /dev/null and b/calc differ
diff --git a/calc.c b/calc.c
index dca5452..7ac2177 100644
--- a/calc.c
+++ b/calc.c
@@ -33,7 +33,7 @@ static struct token* opStack;
 static int outCount;
 static double* outStack;
 
-static const int binary[] = { 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
+static const int binary[] = { 1, 1, 1, 1, 1, 1, 0, 0, 0, 0 };
 static const int precedence[] = { 0, 0, 1, 1, 1, 2, 3, 4, 4, 5 };
 static const int association[] = { 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
 
@@ -91,7 +91,7 @@ int execute(struct token temp) {
 				case '%':
 					result = fmod(d1, d2);
 					break;
-				case '#':
+				case '^':
 					result = pow(d1, d2);
 					break;
 			}
diff --git a/prog b/prog
new file mode 100755
index 0000000..51f025d
Binary files /dev/null and b/prog differ