main.cpp

一个不带界面的计算器

#include<iostream.h>
#include<string.h>
#include<stdio.h>
#include<fstream.h>
#include<stdlib.h>
#include<ctype.h>
#include"calculator.h"

void main()
{
	FILE *fp;			//保证每次都清空文件'"output.txt"
	if ( ( fp = fopen ("output.txt","w")) == NULL)
	{
		printf("cannot open file!\n");
	}
	fclose(fp);

	ReadFromFile("input.txt");
}