/* Count chars */

#include <stdio.h>
#include <stdlib.h>

int count_chars(char, char*);

int main() {
    char *chaine = "Hello world!";
    char caractere;
    int count;

    caractere = 'e';
    count = count_chars(caractere, chaine);
    printf("Chaine: %s\n", chaine);
    printf("Le caractère '%c' est présent %d fois.\n", caractere, count);

    caractere = 'l';
    count = count_chars(caractere, chaine);
    printf("Chaine: %s\n", chaine);
    printf("Le caractère '%c' est présent %d fois.\n", caractere, count);

    return 0;
}

int count_chars(char caractere, char *chaine) {
    int i = 0;
    int count = 0;

    while (chaine[i] != '\0') {
        if (chaine[i] == caractere) {
            count++;
        }
        i++;
    }

    return count;
}