题目描述

代码展示

//语言之争
#include<fstream>
#include<string>using namespace std;ifstream cin("language.in");
ofstream cout("language.out");string a;
int n;int main() {int i;bool java = false, cpp = false, word = false, err = false;cin >> a;n = a.size();for (i = 0; i < n; i++) {if (a[i] >= 'A' and a[i] <= 'Z')java = true;if (a[i] == '_')cpp = true;}if (a[0] >= 'A' and a[0] <= 'Z')java = false;for (i = 0; i < n; i++)if (a[i] == '_' and a[i + 1] == '_')cpp = false;if ((not java and not cpp) or (java and cpp))err = true;if (err)cout << "Error!\n";else {if (cpp)//change to java{word = false;for (i = 0; i < n; i++)if (word) {cout << char(a[i] - 32);word = false;}else if (a[i] >= 'a' and a[i] <= 'z')cout << a[i];else if (a[i] == '_')word = true;} else//change to cpp{for (i = 0; i < n; i++)if (a[i] >= 'A' and a[i] <= 'Z') {if (i > 0) cout << "_";cout << char(a[i] + 32);} elsecout << a[i];}cout << "\n";}cin.close();cout.close();return 0;
}