1. [Prompt the user to enter a sentence, then hit newline. Read the sentence one character at a time,
  2. until you come to the newline character. Count the total number of keystrokes entered, the number of
  3. alphabetic characters, and the number of vowels ('a', 'e', 'i', 'o', and 'u'). Output these three
  4. counts]

    End Result should look like this :
    Keystrokes: 9999
    Alpha Characters: 9999
    Vowels: 9999

    Only problem is when I insert a sentence... the CMD prompt does not continue... Any Help appreciated Please

Code:
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>


int main(int argc, char *argv[])
{
  
  int loop = 0; //Variable used for counting in the loop.
  int keystrokes = 0; //Counts number of keystrokes.
  int letters = 0; //Counts number of total letters.
  int vowels = 0;//Counts number of vowels.
  char sentence[9999]; //Defines the character array that will hold the input sentence. and fills it with the user's input.
  
  printf("Sentence Analyzer.\n");
  printf("Input your sentence(s), then hit enter.\n");
  scanf(" %c", &sentence); 
  
  for(loop = 0; sentence[loop] != '\n'; loop++)
  {
           if (sentence[loop] = 'a'||'e'||'i'||'u')
           {
                              ++keystrokes;
                              ++letters;
                              ++vowels;
                              }
                              else
                              {
                                  if (isalpha(sentence[loop]) == 1)
                                  {
                                                              ++keystrokes;
                                                              ++letters;
                                                              }
                                                              else
                                                              {
                                                                  ++keystrokes;
                                                                  }
                                                                  }
                                                                  }
                                                                  
  
  printf("keystrokes%c\n   ", keystrokes); 
  printf("Alpha Characters %c\n", letters); 
  printf("Vowels %c", vowels);
  
  
  return 0;
}