Hey guys, I’m new here but I have a question that has been bothering me for a few days now. I am writing a program that counts the number of words, vowels, and palindromes within a string and I am stuck on the palindrome counting aspect of the program. So far the code I’ve written has yielded no result and I figured I would sign up and ask here. The purpose is to input code into the int is_palindrome(char my_sen[]) function and then call upon it in my main method, but I need help on how to record a palindrome as I’m a beginner at C and programming itself. Here is my code so far.
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define SENTENCE 256
int main(void){
char my_sen[SENTENCE], *s; //String that containts at most 256 as well as a pointer
int words = 1, count = 0; //Integer variables being defined
int i,vowel = 0, length; //More definitions
printf("Enter a sentence: ");//Input sentence
gets(my_sen);//Receives and processes input
length = strlen(my_sen); //Stores the length of the input within length
for(i=0;my_sen[i] != '\0'; i++){
if(my_sen[i]=='a' || my_sen[i]=='e' || my_sen[i]=='i' || my_sen[i]=='o' || my_sen[i]=='u' || //Loop that states if the input contains any of the following
my_sen[i]=='A' || my_sen[i]=='E' || my_sen[i]=='I' || my_sen[i]=='O' || my_sen[i]=='U') //characters(in this case, vowels), then it shall be
{ //stored to be later printed
vowel++;
}
if(my_sen[i]==' ' || my_sen[i]=='!' || my_sen[i]=='.' || my_sen[i]==',' || my_sen[i]==';' || //Similar to the vowel loop, but this time
my_sen[i]=='?') //if the following characters are scanned within the input
{ //then the length of the characters within the input is
length--; //subtracted
}
}
for(s = my_sen; *s != '\0'; s++){ //Loop that stores the number of words typed after
if(*s == ' '){ //each following space
count++;
}
}
printf("The sentence entered is %u characters long.\n", length); //Simply prints the number of characters within the input
printf("Number of words in the sentence: %d\n", count + 1); // Adding 1 to t[he count to keep track of the last word
printf("Average length of a word in the input: %d\n", length/count);//Prints the average length of words in the input
printf("Total Number of Vowels: %d\n", vowel);//Prints the number of vowels in the input
printf("Average number of vowels: %d\n", vowel/count);//Prints the average number of vowels within the input
printf("Number of words that contain at least 3 vowels: %d\n",vowel_count(my_sen));//Prints number of words that contain at least 3 vowels
printf("Number of words that are palindomes: %d\n", is_palindrome(my_sen));
return 0;
}
int vowel_count(char my_sen[])
{
int wcount = 0; // number of words with 3+ vowel chars
int vcount = 0; // current number of vowel chars in the current word
int i = 0; // index into the string
int ch;
while ((ch = my_sen[i++]) != '\0')
{
if (isspace(ch) || !isalpha(ch))
{
// ch is not an alphabetical char, which can happen either
// before a word or after a word.
// If it's after a word, the running vowel count can be >= 3
// and we need to count this word in.
wcount += vcount >= 3; // add 1 to wcount if vcount >= 3
vcount = 0; // reset the running vowel counter
continue; // skip spaces and non-alphabetical chars
}
if (strchr("aeiouAEIOU", ch) != NULL) // if ch is one of these
{
++vcount; // count vowels
}
}
// If my_sen[] ends with an alphabetical char,
// which belongs to the last word, we haven't yet
// had a chance to process its vcount. We only
// do that in the above code when seeing a non-
// alphabetical char following a word, but the
// loop body doesn't execute for the final ch='\0'.
wcount += vcount >= 3; // add 1 to wcount if vcount >= 3
return wcount;
}
int is_palindrome(char my_sen[]){
}