Main.cc: In function 'int main()':
Main.cc:14:14: error: conflicting declaration 'char c'
char c;
^
Main.cc:13:17: note: previous declaration as 'int c'
int a,b,c;
^
Main.cc:15:21: error: 'run' was not declared in this scope
if(!run(a+18) && b==2 && c==29){
^