Perhaps you can put everything in a string, and go to the next line with a \
:
void main() {
int a,b,c,d,e,g,h,i,f[1];
double A,B,C,D,EFGHIJKLMNOPQRSTUVWXYZhijklmnopqrstuvwxyz_;
// Following line is a line using many ASCII characters. (Begins with a TAB)
{a =!~(0*b%c^d&e+f[g]|h-i)?A:B>C,D<EFGHIJKLMNOPQRSTUVWXYZhijklmnopqrstuvwxyz_/1.23456789;}"'`@#$\
";
}