this code is written to convert the decimal number to hexadecimal number in sixteen bit format. the decimal numbers are stored in a text file and after conversion to the hexadecimal format data are stored in a seperate file data that is written will be in the coe file format.function fscanf is used to read the txt file and function fprintf is used to to write a file in a particular location .function dectohex is used for decimal to hexadecimal conversion.