Main.cc: In function 'int main()':
Main.cc:6:5: error: 'intn' was not declared in this scope
intn=2;
^
Main.cc:8:15: error: 'c1' was not declared in this scope
char c2=((c1-65)+)%79+65;
^
Main.cc:8:22: error: expected primary-expression before ')' token
char c2=((c1-65)+)%79+65;
^