[General] Paraview file format for collocated grid

hadian

I am trying to migrate from Tecplot (on Windows) to Paraview (on Linux). my CFD code uses collocated grids and Multi-block technique. 1. Is there any sample code available for generating data files that can be read by paraview? (vtk or any other acceptable format) 2. Tecplot accepts collocated grid, so i could introduce x,y,z at cell corners and other parameters (velocity, pressure,...) at cell centers. Is there this function available in paraview?