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/*
* pr_09.c
*
* Created on: Jun 11, 2013
* Author: delmadord
*/
#include <stdio.h>
#include <ctype.h>
#define SENTENCE_LENGHT 100
int compute_vowel_count(const char *sentence);
int read_line(char str[], int n);
int main(void) {
char sentence[SENTENCE_LENGHT + 1];
printf("Enter a sentence: ");
read_line(sentence, SENTENCE_LENGHT);
printf("Your sentence contains %d vowels.",
compute_vowel_count(sentence));
return 0;
}
int compute_vowel_count(const char *sentence) {
int vowels = 0;
char *p = sentence;
while (*p) {
*p = toupper(*p);
if (*p == 'A' || *p == 'E' || *p == 'I' || *p == 'O' || *p == 'U')
vowels++;
p++;
}
return vowels;
}
int read_line(char str[], int n) {
int ch, i = 0;
while ((ch = getchar()) != '\n')
if (i < n)
str[i++] = ch;
str[i] = '\0';
return i;
}