用vc++运行程序提示错误！！
#include <string.h>
#include <stdio.h>
#include <mem.h>
int main(void)
{
　　char buffer[] = "Hello world\n";
　　printf("Buffer before memset: %s\n", buffer);
　　memset(buffer, '*', strlen(buffer) - 1);
　　printf("Buffer after memset: %s\n", buffer);
　　return 0;
}
运行后提示缺少mem.h文件，那该怎么办呢？能自己添加吗？那怎么添加呢？
大家帮帮我啊！

[解决办法]
要学会用MSDN

memset函数是在<memory.h>中申明的

C/C++ code

Example/* MEMSET.C: This program uses memset to * set the first four bytes of buffer to "*". */#include <memory.h>#include <stdio.h>void main( void ){   char buffer[] = "This is a test of the memset function";   printf( "Before: %s\n", buffer );   memset( buffer, '*', 4 );   printf( "After:  %s\n", buffer );}OutputBefore: This is a test of the memset functionAfter:  **** is a test of the memset function
[解决办法]
探讨

要学会用MSDN

memset函数是在 <memory.h>中申明的

C/C++ codeExample/*MEMSET.C: This program uses memset to
 * set the first four bytes of buffer to "*".*/#include<memory.h>#include<stdio.h>voidmain(void)
{charbuffer[]="This is a test of the memset function";

   printf("Before: %s\n", buffer );
   memset( buffer,'*',4);
   printf("After:  %s\n", buffer );
}


Output

Before: Thisisa test of t…

[解决办法]
头文件包含不对.