读取模式调整 确保load函数只读

sms.c

@@ -154,14 +154,14 @@ void Save() //
 void Load() //加载数据文件
 {
 	FILE *fp1, *fp2;
-	if ((fp1 = fopen("sql.txt", "rb+")) == NULL)
+	if ((fp1 = fopen("sql.txt", "rb")) == NULL)
 	{
 		system("cls");
 		printf("车次数据文件不存在，请先录入数据\n");
 		system("pause");
 		Menu();
 	}
-	if ((fp2 = fopen("num.txt", "rb+")) == NULL)
+	if ((fp2 = fopen("num.txt", "rb")) == NULL)
 	{
 		system("cls");
 		printf("车次序号数据文件不存在，请先录入数据\n");