编写一个程序读取输入，直到#，并报告序列ei出现的次数。

0 推荐

#include<stdio.h>
int main(void)
{
 char former=0,present;
 int count=0;
 while((present=getchar()) != '#')
 {
 if((former == 'e') && (present == 'i')) count++;
 former = present;
 }
 printf("ei has appeared %d times\n",count);
 return(0);
}