Hello,While we are sending data TXBL is zero,onle the sending is done TXBL bit goes 1.
Can i check the 4th bit in this way shown bellow?
Thanks.

 while(I2C0->IF[4]!=1){}

 

I think you must better create a bit mask (0x10) for TXBL bit, then bitwise and it against I2C0_IF register.

 

I don't think so. That is not one of the usual methods available for checking bits. How you do it is compiler dependent, it may or may not be in the latest C standard, but it was never addressed in the previous ones.
The semantics of your statement suggest an array of some type (byte, char, int ...) pointed to by I2C0

while (((I2C0->IF) & (1<<4)) == 0)

would be closer to the correct syntax and semantics, UNLESS your specific compiler provides a method for picking a specific bit out of a word, something like
I2C0->IF.4

 

Or you can create a structure so that the test becomes

while (! I2C0_IF.TXBL )