Chapter 8, Problem 1AW

Explanation of Solution

Method to check whether the string is for proper capitalization and punctuation:

The following method helps to check whether the input string is for proper capitalization and punctuation:

//Define the method

private bool IsSentence(string str)

{

    //Declare and initialize the variable

    bool status = false;   

/*Declare the variable to store the first character in string. */

    char first = str[0];

 /*Declare the variable to store the last character in the string. */

    char last = str[str.Length - 1];

/*Check whether the first character is uppercase and the last character is a punctuation mark. */

    if (char.IsUpper(first) && char...