STM32F103x and MPU6050 I2C issue

I worked out on a library for UART debug and I2C basics to read write registers via I2C..problem now is I read the FIFO but it turns out to be zero..Disabled sleep bit..Fifo Enable Register Set, User Control Register set too..but still no readings.
https://img42.com/XS0d0
here's the link to the code github.com/.../Tuna_Fish

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