题解 | #句子逆序#

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

void printWord(char* w)
{
    char ch = *w;
    while(ch != ' ' && ch != 0)
    {
        if((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
        {
            printf("%c",ch);
        }
        ch = *(++w);
    }
    
}

int main() {
    char str[1000] = {0};
    char ch = 0;
    int len = 0;
    while('\n' != (ch = getchar()))
    {
        str[len++] = ch;
    }

    int wordEndp = len-1;
    for(int i = len-1; i >= 0; i--)
    {
        if(' ' == str[i] )
        {
            printWord(&str[i+1]);
            printf(" ");
        }
        else if( 0 == i)
             printWord(&str[i]);
    }
    return 0;
}