using c++ please

LAB FIVE-CONVERTING from HEX to DECIMAL and ADDITION DESIGN and IMPLEMENT a PROGRAM THAT WILL CONVERT A HEXIDECIMAL VALUE to its DECIMAL NUMBER EQUIVALENT (1) READ IN A NUMBER FROM A FILE AND CONVERT THE NUMBER AS STATED ABOVE. (2) READ IN AT LEAST TWO NUMBERS AND ADD THE NUMBERS AND PRINT OUT the SUM IN DECIMAL. (3) READ IN MORE THAN TWO NUMBERS AT A TIME, ADD ALL THE VALUES and PRINT OUT the SUM of ALL THE VALUES. OUTPUT: The Original Number, ie. the HEXADECIMAL, the value of each number and the SUM IN DECIMAL EACH with appropriate HEADINGS Note: Sample Output for 1 above: The Original HEXADECIMAL Value is and its DECIMAL Equivalent is