UVA oj 490 Rotating Sentences（字符串）

Rotating Sentences

Time Limit: 3000MS Memory Limit: Unknown 64bit IO Format: %lld & %llu

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Description

In ``Rotating Sentences,'' you are asked to rotate a series of input sentences 90 degrees clockwise. So instead of displaying the input sentences from left to right and top to bottom, your program will display them from top to bottom and right to left.

Input and Output

As input to your program, you will be given a maximum of 100 sentences, each not exceeding 100 characters long. Legal characters include: newline, space, any punctuation characters, digits, and lower case or upper case English letters. (NOTE: Tabs are not legal characters.)

The output of the program should have the last sentence printed out vertically in the leftmost column; the first sentence of the input would subsequently end up at the rightmost column.

Sample Input

Rene Decartes once said,"I think, therefore I am."

Sample Output

"RIe nteh iDnekc,a rttheesreofnocree sIa iadm,."

这题就是把输入字符串顺时针旋转90度，没有字符的地方用空格补齐，不用文件的输入输出的话看不到测试结果

#include<cstdio>#include<cstring>#include<iostream>#include<algorithm>using namespace std;const int maxn = 105;char a[maxn][maxn];int main(){    int maxlen = -1;    int i = 0;    memset(a,0,sizeof(a));    freopen("in.txt","r",stdin);    freopen("out.txt","w",stdout);    while(gets(a[i]))    {        int len = strlen(a[i]);        if(maxlen < len)            maxlen = len;        i++;    }    for(int j=0;j<maxlen;j++)    {        for(int k=i-1;k>=0;k--)        {            if(a[k][j] == 0)                printf(" ");            else                printf("%c",a[k][j]);        }        printf("\n");    }    return 0;}