UVa10878 - Decode the tape-字符串-难度1

题目链接：

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=1819

Problem A
Decode the tape
Time Limit: 1 second

"Machines take me by surprise with great frequency."

Alan Turing

Your boss has just unearthed a roll of old computer tapes. The tapes have holes in them and might contain some sort of useful information. It falls to you to figure out what is written on them.

Input
The input will contain one tape.

Output
Output the message that is written on the tape.

Sample InputSample Output

___________| o   .  o||  o  .   || ooo .  o|| ooo .o o|| oo o.  o|| oo  . oo|| oo o. oo||  o  .   || oo  . o || ooo . o || oo o.ooo|| ooo .ooo|| oo o.oo ||  o  .   || oo  .oo || oo o.ooo|| oooo.   ||  o  .   || oo o. o || ooo .o o|| oo o.o o|| ooo .   || ooo . oo||  o  .   || oo o.ooo|| ooo .oo || oo  .o o|| ooo . o ||  o  .   || ooo .o  || oo o.   || oo  .o o||  o  .   || oo o.o  || oo  .  o|| oooo. o || oooo.  o||  o  .   || oo  .o  || oo o.ooo|| oo  .ooo||  o o.oo ||    o. o |___________

A quick brown fox jumps over the lazy dog.

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Problemsetter: Igor Naverniouk
Special thanks: BSD games ppt.

代码+思路：

/* *主要是理解题意： *去除'.',其余7位组成ASCII码，'o'表示对应位是1 */#include <iostream>#include <cstdio>#include <cstring>#include <string>using namespace std;const int MAX = 101;char ans[MAX][MAX];int main(){#ifdef LOCALfreopen("f:\\input.txt", "r", stdin);//freopen("f:\\output.txt", "w", stdout);#endifstring s;int first = 0;while(getline(cin, s)){if(s[0] == '_'){if(first == 1) {cout << endl;break;}else{continue;}}int sum = 0;int time = 1;for(int i = 9; i != 1; i--){if(s[i] == 'o'){sum += time;}if(s[i] != '.')//如果是'.', 跳过这位time = 2 * time;}printf("%c", sum);}return 0;}