自由手記

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
void copy_string(char from[],char to[])//簡單的复制函數
{
	int i=0;
	while(from[i]!='\0')
	{
		to[i]=from[i];
		i++;
	}
	to[i]='\0';
}
int main()
{
	FILE * file;
	int i=0;
	char a[]="i am a teacher!";
	char b[]="you are a student";
	printf("string a=%s\nstring b=%s\n",&a,&b);
	//copy_string(a,b);
	printf("string a=%s\nstring b=%s\n",&a,&b);
	file=fopen("file.dat","wb+");
	if(file==NULL)
	{
	printf("cant't open this file !\n");
	exit(0);
	}
	else
	{
		while(a[i]!=NULL)
		{	if(fputc(a[i],file)==NULL)
			putchar(file);
			i++;
		}
		i=0;
		while(b[i]!=NULL)
		{
			if(fputc(b[i],file)==NULL)
			putchar(file);
			i++;
			
		}
		fclose(file);
		char str[100];
		FILE * readfile;
		readfile=fopen("file.dat","r+");
		fputs(fgets(str,100,readfile),stdout);
		
		
		fclose(readfile);
	}
	printf("\n");
	return 0;
}

今天現在沒事，敲寫了一個讀寫文件的小程序，僅供初學者参考一下！ 
From:CSDN