题解 | #字符串最后一个单词的长度#

#include <stdio.h>
#include <string.h>

int main() {
    int i, n, length;
    char str[5000] = {0};
    char * p, * q;
    length = 0;
    fgets(str, sizeof(str), stdin);
    n = strlen(str) - 1;
    p = &str[n-1];
    q = str;
    for(i = 0;i < n;i++)
    {
        if(* p != ' ')
        {
            p--;
            length++;
            if( p == q)
            {
                length++;
                break;
            }
        }
        else {
            break;
        }
    }
    printf("%d",length);
    return 0;
}