烫现象!

[shuirh]

#include <stdio.h>

main()
{
FILE *fp = NULL;
char surname[10] = "Green";
//char surname[10];
char buffer[100];

//printf( "please input the surname:" );
//scanf( "%s", surname );

fp = fopen( "bak.txt ", "w");
fwrite( buffer, sizeof ( surname ), 1, fp);
printf( "%s\n", buffer);
close( fp );

fp = fopen( "bak.txt", "r");
fread( buffer, sizeof ( surname ), 1, fp);
printf("%s\n", buffer);
close( fp );
}

输出的时候有乱码,要去掉乱码,怎么办????

[wuyu637]

void
main()
{
FILE *fp = NULL;
char surname[10] = "Green";
//char surname[10];
char buffer[100] = "green";

//printf( "please input the surname:" );
//scanf( "%s", surname );

fp = fopen( "bak.txt", "wb");
fwrite( buffer, strlen(buffer), 1, fp);
printf( "%s\n", buffer);
fclose( fp );

fp = fopen( "bak.txt", "rb");
fread( buffer, strlen(buffer), 1, fp);
printf("%s\n", buffer);
fclose( fp );
}

[feng4206yu]

#include <stdio.h> 

int main() 
{ 
	FILE *fp = NULL; 
	char surname[10] = "Green\0";   	
	fp = fopen( "bak.txt ", "w"); 
	fwrite( surname, sizeof(surname), 1, fp); 
	printf( "%s\n", surname); 
	fclose( fp ); 
	
	fp = fopen( "bak.txt", "r"); 
	fread( surname, sizeof(char), 6, fp); 
	printf("%s\n", surname); 
	fclose( fp ); 

	return 0;
} 

[waizqfor]

#include <stdio.h> 
int main() 
{ 
FILE *fp = NULL; 
char surname[10] = "Green\0"; 
//char surname[10]; 
char buffer[100]; 

//printf( "please input the surname:" ); 
//scanf( "%s", surname ); 

fp = fopen( "bak.txt ", "w"); 
fwrite( buffer, sizeof ( surname ), 1, fp); 
printf( "%s\n", buffer); 
fclose( fp ); 

fp = fopen( "bak.txt", "r"); 
fread( buffer, sizeof ( surname ), 1, fp); 
printf("%s\n", buffer); 
fclose( fp ); 
return 0;
} 

[dongpy]

char buffer[100];
//.......................
printf( "%s\n", buffer);
=========================================
字符数组buffer没有初始化，里面的内容是随机的，所以显示乱码。

[夹心饼干]

在使用前buffer初始化用 memset(buffer,0x00,sizeof(buffer));

[夹心饼干]

还有如果是VS2008的话,最好工程不要用Unicode,换多字节

[yangch_nhcmo]

#include <stdio.h>
#include <string.h>

main()
{
FILE *fp = NULL;
char surname[10] = "Green";
//char surname[10];
char buffer[100];
memset(buffer,0,100);

//printf( "please input the surname:" );
//scanf( "%s", surname );

fp = fopen( "bak.txt ", "w");
fwrite( buffer, sizeof ( surname ), 1, fp);
printf( "%s\n", buffer);
//close( fp ); //===>fclose(fp);
fclose(fp);

fp = fopen( "bak.txt", "r");
fread( buffer, sizeof ( surname ), 1, fp);
printf("%s\n", buffer);
//close( fp ); //===>fclose(fp);
fclose(fp);
}