Scilab function
Last update : September 1995

is_connex - connectivity test

### Calling Sequence

  `res = is_connex(g)`

### Parameters

- `g`: graph list
- `res`: integer, result of the test

### Description

`is_connex` returns 1 if the graph `g` is connected and 0 otherwise.

### Examples

    g=make_graph('foo',1,3,[1,2,3,1],[2,3,1,3]);
    is_connex(g)
    g=make_graph('foo',1,4,[1,2,3,1],[2,3,1,3]);
    is_connex(g)

### See Also

`con_nodes`, `strong_connex`,