5 volt regulator not getting desired output
Here is a L7805CV datasheet. 

Note that on page 7, for the 5V version, Vout is specified with loads of 5 mA to 1A and there is a footnote that says "a Minimum load current for regulation is 5 mA".  

To meet this minimum current requirement a load of no more than
R = V/I = 5V/5mA = 1 K is required.

That said, "usually" a 7805 will "more or less just work" if connected correctly. Caps as shown help but usually are not essential to make it work.  Even Vout is liable to be "about right" without a load. (These older style regulators power themselves between Vin and ground so load current is less important.)(The LM317 family power themselves from Vin to Vout so a minimum Iout is needed for correct operation). 

SO 


Try it with a 5mA or higher load. (1 K or lower). 
Look at the data sheet(s) and ENSURE that you have the pinout correct.  ||