/in/foo.cc: In function 'int main()':
/in/foo.cc:37:11: error: 'i' was not declared in this scope
     for ( i = 0; i < n2; i++) {
           ^
/in/foo.cc:41:11: error: 'i' was not declared in this scope
     for ( i = 0; i < n3; i++) {
           ^
/in/foo.cc:49:11: error: 'i' was not declared in this scope
     for ( i = 0; i < inter12Size; i++) {
           ^
/in/foo.cc:53:11: error: 'i' was not declared in this scope
     for ( i = 0; i < inter13Size; i++) {
           ^