From eb1cc638ef7e5321a4b3149793c6011c0b2071ea Mon Sep 17 00:00:00 2001
From: zinee2 <jieunkim2@naver.com>
Date: Sat, 6 May 2017 16:28:15 +0900
Subject: [PATCH 1/2] pointer

---
 calc.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/calc.c b/calc.c
index 85f1466..edf6cbd 100644
--- a/calc.c
+++ b/calc.c
@@ -3,31 +3,32 @@
 
 int main(){
 	FILE *fp = NULL;
-	int operand1, operand2;
+	double  operand1, operand2;
 	char operator = ' ';
-	int result, line = 0;
+	double (* result)(double, double);
+	double line = 0;
 
 	fp = fopen("read.txt","r");
 	if(fp!=NULL){
-		fscanf(fp, "%d", &line);
+		fscanf(fp, "%lf", &line);
 	
 		for(int i=0; i<line; i++) {
-			fscanf(fp, "%d %c %d",&operand1, &operator, &operand2);
+			fscanf(fp, "%lf %c %lf",&operand1, &operator, &operand2);
 			switch(operator) {
 				case '+':
-				result = add(operand1, operator);
+				result = &add;
 				break;
 				case '-':
-				result = minus(operand1, operator);
+				result = &minus;
 				break;
 				case '*':
-				result = mul(operand1, operator);
+				result = %mul;
 				case '/':
-				result = div(operand1, operator);
+				result = &div;
 				break;
 			}		
-			printf("%d %c %d = %d\n",
-				 operand1, operator, operand2, result);
+			printf("%.0lf %c %.0kf = %.6lf\n",
+				 operand1, operator, operand2, result(operand1, operand2));
 		}
 	}
 	return 0;

From c1640970a4859fe35dc0d2751e52a8639d05933a Mon Sep 17 00:00:00 2001
From: zinee2 <jieunkim2@naver.com>
Date: Sat, 6 May 2017 16:36:43 +0900
Subject: [PATCH 2/2] pointer

---
 calc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/calc.c b/calc.c
index edf6cbd..0fd54d9 100644
--- a/calc.c
+++ b/calc.c
@@ -1,6 +1,6 @@
 #include <stdio.h>
 #include "operators.h"
-
+ 
 int main(){
 	FILE *fp = NULL;
 	double  operand1, operand2;