输入此程序时,出现undefined reference to ‘getcher’的问题,求解
#include <stdio.h>#include <conio.h>
void main()
{
char c;
int letters=0,space=0,digit=0,others=0;
printf("please input some characters\n");
while((c=getcher())!='\n')
{
if(c>='a'&&c<='z'||c>='A'&&c<='Z')
letters++;
else if(c==' ')
space++;
else if(c>='0'&&c<='9')
digit++;
else
others++;
}
printf("all in all:char=%d space=%d digit=%d others=%d\n",letters,space,digit,others);
}