Write a program to input a sentence and convert it into uppercase and count and display the total number of words starting with a letter 'A'.
Example:
Sample Input: ADVANCEMENT AND APPLICATION OF INFORMATION TECHNOLOGY ARE EVER CHANGING.
Sample Output: Total number of words starting with letter 'A' = 4
import java.util.Scanner;
public class WordsWithLetterA
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("Enter a string: ");
String str = in.nextLine();
str = " " + str; //Add space in the begining of str
int c = 0;
int len = str.length();
str = str.toUpperCase();
for (int i = 0; i < len - 1; i++) {
if (str.charAt(i) == ' ' && str.charAt(i + 1) == 'A')
c++;
}
System.out.println("Total number of words starting with letter 'A' = " + c);
}
}Enter a string:
A tech number has even number of digits.
Total number of words starting with letter 'A' = 1
Press any key to continue . . .
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.