Language: C++

#include<stdio.h>

int main(){

pi =  3.14159265358979323846;

printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);

return 0;
}

Compiler output:
a.cc:7:61: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
a.cc: In function 'int main()':
a.cc:5:1: error: 'pi' was not declared in this scope
    5 | pi =  3.14159265358979323846;
      | ^~
a.cc:7:24: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                        ^
a.cc:7:25: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                         ^
a.cc:7:27: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                           ^
a.cc:7:28: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                            ^
a.cc:7:29: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                             ^
a.cc:7:30: error: 'r' was not declared in this scope
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                              ^
a.cc:7:32: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                ^
a.cc:7:33: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                 ^
a.cc:7:35: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                   ^
a.cc:7:36: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                    ^
a.cc:7:37: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                     ^
a.cc:7:44: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                            ^
a.cc:7:45: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                             ^
a.cc:7:47: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                               ^
a.cc:7:48: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                ^
a.cc:7:49: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                 ^
a.cc:7:53: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                     ^
a.cc:7:54: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                      ^
a.cc:7:56: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                        ^
a.cc:7:57: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                         ^
a.cc:7:58: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                          ^
a.cc:7:61: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                             ^
a.cc:7:62: error: expected primary-expression before '?' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                              ^
a.cc:7:63: error: expected primary-expression before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |                                                               :
a.cc:7:63: error: expected primary-expression before ')' token
a.cc:7:63: error: expected ':' before ')' token
    7 | printf("%lf %lf\n", pi???*???r???*???r , 2???*???pi???*???r???);
      |                                                               ^
      |