寻找一串英文里包含多少个指定的单词

Question

寻找一串英文里包含多少个指定的单词
输入
word sentence
输出
n

例
输入
cat Acatisonthetable
输出
1

输入
mickey minnieisacutemouse
输出
0

使用函数

Answer 1

#include<stdio.h>
#include<string.h>
void count_word(char*word, char*sen, int&num)
{
    char*keep = (char*)sen;
    char*p1;
    while (*keep)
    {
        p1 = (char*)word;
        while (*p1&&*keep && !(*p1 - *keep))
        {
            p1++;
            keep++;
        }
        if (*p1 == '\0')
            num++;
        else
            keep++;
    }
}