View Compilation Error

0_0_19887450_19381.cpp:2:12: error: 'std::cin' has not been declared
 using std::cin;
            ^
0_0_19887450_19381.cpp:3:12: error: 'std::cout' has not been declared
 using std::cout;
            ^
0_0_19887450_19381.cpp:4:12: error: 'std::endl' has not been declared
 using std::endl;
            ^
0_0_19887450_19381.cpp: In function 'int main()':
0_0_19887450_19381.cpp:8:5: error: 'cin' was not declared in this scope
     cin >> number;
     ^
0_0_19887450_19381.cpp:15:13: error: 'cout' was not declared in this scope
             cout << figure + (character - ('A' - 1));
             ^
0_0_19887450_19381.cpp:17:13: error: 'cout' was not declared in this scope
             cout << figure - (character - ('a' - 1));
             ^
0_0_19887450_19381.cpp:19:9: error: 'cout' was not declared in this scope
         cout << endl;
         ^
0_0_19887450_19381.cpp:19:17: error: 'endl' was not declared in this scope
         cout << endl;
                 ^