HDU-4847 Wow! Such Doge!，模拟！

Wow! Such Doge!

char s
;
int main()
{
//    int n;
int ans=0;
while(gets(s))
{
for(int i=0; s[i]!='\0'; i++)
if(s[i]>='A'&&s[i]<'z')
{
if(s[i]=='d'||s[i]=='D')
{
if(s[i+1]=='o'||s[i+1]=='O')
{
if(s[i+2]=='g'||s[i+2]=='G')
{
if(s[i+3]=='e'||s[i+3]=='E')
{
ans++;
i+=3;
}
}
}
}

}
}
printf("%d\n",ans);
return 0;
}