C Programming    Write a program that reads an integer from the user (keyboard), namely n. Yourprogram should print all positive numbers that are smaller than n and whosedigits sum up to a perfect square number.(An integer is a perfect square if it hasan integer square-root for example 25) You should print the numbers in ascendingorder and print their digits separated by “:“ symbol from the least significant digitto the most significant digit on the same line as the number. At the end of eachline you should also print the sum of the digits of the number.   Example:If the user enters n : 30, then the output should be as follows:1 1 14 4 49 9 910 0:1 113 3:1 418 8:1 922 2:2 427 7:2 9

In C language / Please don't use (sprint) function. Write a function fact_calc that takes a string output argument and an integer input argument n and returns a string showing the calculation of n!. For example, if the value supplied for n were 6, the string returned would be 6! 5 6 3 5 3 4 3 3 3 2 3 1 5 720 Write a program that repeatedly prompts the user for an integer between 0 and 9, calls fact_calc and outputs the resulting string. If the user inputs an invalid value, the program should display an error message and re-prompt for valid input. Input of the sentinel -1 should cause the input loop to exit. Note: Don't print factorial of -1, or any number that is not between 0 and 9. SAMPLE RUN #4: ./Fact Interactive Session Hide Invisibles Highlight: None Show Highlighted Only Enter·an·integer·between·0·and·9·or·-1·to·quit:5↵ 5!·=·5·x·4·x·3·x·2·x·1·x··=·120↵ Enter·an·integer·between·0·and·9·or·-1·to·quit:6↵ 6!·=·6·x·5·x·4·x·3·x·2·x·1·x··=·720↵…

C++ please and thank you.   In this assignment you will identify the word and word combinations associated with telephone numbers by using the word list contained in a file with over 264,100 words. Each word ranges from 2- 12 letters.   1 You will extract from this file and store all the three and four-letter words.   2 You will accept, from user input, a phone number as a string. Then you will validate that the phone number is in the correct format and contains valid numbers. If the phone number is not valid, you should display the message "Invalid phone number" and exit.   3 Using the phone number, you will determine all the corresponding words and word combinations and write them into a file named "output.txt".   Note: A phone number must be in the format ###-#### and contain only the digits [2-9] inclusive to be considered valid. The digits 1 and 0 are considered invalid because they are not associated with any letters.   Example input:   223-5653   The output.txt file should…