Place your source code within [co[t[b][/b]t][/t[b][/b]t]de][/co[t[b][/b]t][/t[b][/b]t]de] tags. For example, the input

[out[tt][/tt]put]
[co[t[b][/b]t][/t[b][/b]t]de]
# include <iostream>
int main() { std::cout << "Hello, World!\n"; }
[/co[t[b][/b]t][/t[b][/b]t]de]
[out[tt][/tt]put]

Produces
[co[tt][/tt]de]
# include <iostream>
int main() { std::cout << "Hello, World!\n"; }
[/co[tt][/tt]de]