求助，全是WA

#include <stdio.h>
#include <string.h>
int main()
{
    char a[101];
    fgets(a, sizeof(a),stdin);
    a[strcspn(a,"\n")]='\0';
    char *token= strtok(a," ");
    while (token!=NULL)
    {
        int length= strlen(token);
        for (int i = length-1; i>=0 ; i--) {
            printf("%c",token[i]);
        }
        token= strtok(NULL," ");
        if (token!=NULL)
        {
            printf("\n");
        }
    }
}