Problem H: 零起点学算法109——单数变复数

#include <stdio.h>
#include<string.h>
int main(void)
{
    int n;
    char word[];
    scanf("%d",&n);
    getchar();
    int i;
    while(n!=)
    {
        gets(word);
        int k=strlen(word);
        if(word[k-]=='y')
            strcat(word,"es");
        else if(word[k-]=='s'||word[k-]=='x')
            strcat(word,"es");
        else if(word[k-]=='s'&&word[k-]=='h')
            strcat(word,"es");
        else if(word[k-]=='c'&&word[k-]=='h')
            strcat(word,"es");
        else if(word[k-]=='o')
            strcat(word,"es");
        else
            strcat(word,"s");
        puts(word);
        n--;
    }
    return ;
}

似乎用printf提交ac不了，用put可以