Secret Research
At a certain laboratory results of secret research are thoroughly encrypted. A result of a single experiment is stored as an information of its completion:
`positive result', `negative result', `experiment failed' or `experiment not completed'
The encrypted result constitutes a string of digits S, which may take one of the following forms:
positive result S = 1 or S = 4 or S = 78 negative result S = S35 experiment failed S = 9S4 experiment not completed S = 190S
(A sample result S35 means that if we add digits 35 from the right hand side to a digit sequence then we shall get the digit sequence corresponding to a failed experiment)
You are to write a program which decrypts given sequences of digits.
Input
A integer n stating the number of encrypted results and then consecutive n lines,
each containing a sequence of digits given as ASCII strings.
Output
For each analysed sequence of digits the following lines should be sent to output (in separate lines):
+ for a positive result - for a negative result * for a failed experiment ? for a not completed experiment
In case the analysed string does not determine the experiment result, a first match from the above list should be outputted.
Sample Input
4 78 7835 19078 944
Sample Output
+ - ? *
就是道简单的字符串处理题。。一开始数组开小了。RE了。
#include<iostream> #include<cstdio> #include<cstring> using namespace std; int main() { int t,len; cin>>t; getchar(); while(t--) { char str[10000]; gets(str); len=strlen(str); if (strcmp(str,"1")==0 || strcmp(str,"4")==0 || strcmp(str,"78")==0) cout<<"+"<<endl; else if (strcmp(str+len-2,"35")==0) cout<<"-"<<endl; else if (str[0]=='9' && str[len-1]=='4') cout<<"*"<<endl; else if (str[0]=='1' && str[1]=='9' && str[2]=='0') cout<<"?"<<endl; else cout<<endl; } return 0; }