PATbasic 1029

#include <iostream> #include <cctype> using namespace std; int main() { string a, b; cin >> a >> b; char c[80]; int flag, index = 0; for (int i = 0; i < a.length(); i++) { flag = 0; for (int j = 0; j < b.length(); j++) { if (a[i] == b[j]) { flag = 1; break; } } if (!flag) c[index++] = toupper(a[i]); } for (int i = 1; i < index; i++) { //去掉重复的字符 for (int j = 0; j < i; j++) { if (c[i] == c[j]) { c[i] = '#'; break; } } } for (int i = 0; i < index; i++) if (c[i] != '#') cout << c[i]; return 0; }