sprintf

 I have a problem with sprintf() function.I want to store the float value in buffer but it is not done with sprintf().

Perhaps because the printf function provided by your undisclosed toolchain/library does not support floating point format ?

please sugget me that

1. check the library you use / select the proper library

2. use a spell checker

float value=53.0000;

BTW, "53.0000" is NOT a float value.