You are expected to read loremipsum.txt, then count the occurrence of character 'a' in the file. For this purpose, you will write: 1. a CPP file that uses fstream or istream for reading the file. 2. a C file that uses fopen for reading the file. 3. a C file that utilizes memory mapping with mmap function on the file. If you are not sure about how to write the above functions, please check the recitation slides to get more information about related topics. 3 Report After successfully reading the file and counting the character, you are expected to prepare a report. In your report, you need to analyze and compare the methods. Please discuss advantages and disadvantages of methods, their time efficiency, the impact of file size and your comments related with your observation and your research related with this topic. Please do not exceed 2 pages on your report and state your own ideas