字符串函数】Y"/>
【字符串函数】Y
#iostream
isalpha(ch); 小写字母返回2 大写字母返回1 其他返回0
islower() || isupper() 返回 1 / 0
tolower 字母转小写, 非字母不操作
toupper 转大写#cstring
strncmp(a + i, b + j, n) 字符数组前几位比较#include <iostream>
#include <cstring>
using namespace std;char s[1000010];int main()
{int ans = 0;while (gets(s)) /// 整行输入{int len = strlen(s);for (int i = 0; i < len; i++)s[i] = tolower(s[i]);for (int i = 0; i < len; i++)if (strncmp(s + i, "doge", 4) == 0)ans++;}cout << ans << endl;return 0;
}
Input
An article that Doge wants to know.
The size of the article does not exceed 64KB. The article contains only ASCII characters.
Output
Please output the number of word “doge” (case-insensitive). Refer to the samples for more details.
Sample Input
adoge
cutedo
yourge
blownDoge
lovelyDooge
Wow! Such Dooooooooooooooge!!!
D0ge
dOge DOGE
dogedoge
Sample Output
6
Source
2014西安全国邀请赛
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【字符串函数】Y
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