最近只能在这种简单题上找一找自信了……
#include <stdio.h>
#include <string.h>
int main()
{
char sentence[81];
int n1, len,i,j,space;
scanf("%s", sentence);
len = strlen(sentence);
n1 = (len + 2) / 3;
for (i = 0,j=len-1; i < n1-1; i++,j--) {
printf("%c", sentence[i]);
for (space = 0; space < len - 2 * n1; space++)
printf(" ");
printf("%c\n", sentence[j]);
}
while (i != j+1)
printf("%c",sentence[i++]);
return 0;
}