please help me I need it urgently

a) Write a program in C/C++ that adds an offset of 10 on the 8-bit gray scale to the pixel values of a given image. The program should be able to read an input image file and write the results into an output image file. No fancy code is required. Just the bare essentials. b) What is the problem the output image is suffering from, as a result of our operation with this program? a) Write a program in C/C++ that adds an offset of 10 on the 8-bit gray scale to the pixel values of a given image. The program should be able to read an input image file and write the results into an output image file. No fancy code is required. Just the bare essentials. b) What is the problem the output image is suffering from, as a result of our operation with this program