#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main() {
char s[105];
char s_lower[105];//用来存放把输入的字符串全部变为小写
gets(s);
int len = strlen(s);//输入字符串的长度
char d[3] = {'g','z','u'};
int f[105] = {0};//用来记录字符串,删除为1,不删除0,注意:如果不初始化则不为0
for (int i = 0; i <...