HDU1039 Easier Done Than Said?

#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <ctime>
#include <ctype.h>


using namespace std;

int judge(char a)
{
        if(a==‘a‘||a==‘e‘||a==‘i‘||a==‘o‘||a==‘u‘)
            return 1;
    return 0;
}

int main()
{
    char word[20];

    while(scanf("%s",word)!=EOF&&strcmp(word,"end"))
    {
        int l=strlen(word),i,flag=0;

        for(i=0;i<l;i++)
        {
            if(judge(word[i]))
                flag=1;
        }
        if(flag==1)
        {
            for(i=0;i<l-1;i++)
            {
                if(word[i]==word[i+1]&&word[i]!=‘e‘&&word[i]!=‘o‘)
                {
                    flag=2;
                }
            }

                if(flag==2)
                    printf("<%s> is not acceptable.\n",word);
                else
                {
                    for(i=0;i<l-2;i++)
                    {
                        if((judge(word[i])&&judge(word[i+1])&&judge(word[i+2]))||(!judge(word[i])&&!judge(word[i+1])&&!judge(word[i+2])))
                        {
                            flag=3;
                        }
                    }
                    if(flag==3)
                        printf("<%s> is not acceptable.\n",word);
                    else
                        printf("<%s> is acceptable.\n",word);
                }
        }
        else
            printf("<%s> is not acceptable.\n",word);
    }
    return 0;
}