Please Write this code in C++

Task: Write a program, using functions only, with the following features. 1. Program reads paragraph(s) from the file and stores in a string. 2. Then program counts the occurrence of each word in the paragraph (s) and stores all words with their number of occurrences. 3. If that word has appeared more than one time in whole string, it should store the word only once along its total number occurrences. 4. The output described in above (int part 3) must be stored in a new file. Sample input: is the is and the is and the and is and only that is Sample output: is 5 the 3 and 4 only 1 that 1