PAT甲题题解-1031. Hello World for U (20)-字符串处理,水

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string.h>
#include <cmath>
using namespace std;
int n;
int n1,n2,n3;
char str[100];
int main()
{
    scanf("%s",str);
    n=strlen(str);
    n1=n3=(n+2)/3;
    n2=n+2-n1-n3;
//printf("%d %d %d
",n1,n2,n3);
    for(int i=0;i<n1-1;i++){
        printf("%c",str[i]);
        for(int j=0;j<n2-2;j++){
            printf(" ");
        }
        printf("%c",str[n-1-i]);
        printf("
");
    }
    for(int i=n1-1;i<n1-1+n2;i++)
        printf("%c",str[i]);

    return 0;
}