题解 | #单词倒排#

#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main() {
    char input[10001];
    while(fgets(input, sizeof(input), stdin) != NULL) {
        // printf("%s\n", input);
        int len = strlen(input);
        char output[500][21];
        int outputIndex = 0;
        for(int i = 0; i < len; i++) {
            if(isalpha(input[i])) {
                int j = 0;
                while(isalpha(input[i])) {
                    output[outputIndex][j++] = input[i];
                    i++;
                }
                outputIndex++;
            }
        }
        for(int i = outputIndex - 1; i > 0 ; i--) {
            printf("%s ", output[i]);
        }
        printf("%s", output[0]);
    }

}