#include <stdio.h>
#include <stdbool.h>

int main(void) {
    int max_retries = 5;
    int attempt = 0;
    bool success = false;
    while (attempt < max_retries && !success) {
        attempt++;
        printf("Attempt %d: sending...\n", attempt);
        if (attempt < 3) {
            printf("  Failed (transient error)\n");
        } else {
            printf("  Success!\n");
            success = true;
        }
    }
    if (success) {
        printf("Operation completed after %d attempts.\n", attempt);
    } else {
        printf("Failed after max retries.\n");
    }
    return 0;
}