Finding a character inside a string in C

main.c

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

int main(int argc, char* argv[]) {
    char str[] = "Hello, friend!";
    char* result = strrchr(str, 'e');
    
    if (result != NULL) {
        printf("Character was found!\n");
        int pos = result - str;
        printf("Position: %d\n", pos);
    } else {
        printf("Character was not found!\n");
    }
    return 0;
}