cd8 operator precedent

//S->aB|c operator precedent
//S->AB|C not operator precedent

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

bool is_operator_precedent(const char *rule) {
    bool last_was_non_terminal = false;

    for (int i = 0; rule[i]; i++) {
        if (rule[i] >= 'A' && rule[i] <= 'Z') {
            if (last_was_non_terminal)
                return false; // Two consecutive non-terminals
            last_was_non_terminal = true;
        } else if (rule[i] >= 'a' && rule[i] <= 'z') {
            last_was_non_terminal = false; // Terminal resets the flag
        } else if (rule[i] == 'e') {
            return false; // Epsilon not allowed
        }
    }
    return true;
}

int main() {
    char production[20];

    printf("Enter production rule (e.g., S-->AB|a): ");
    fgets(production, sizeof(production), stdin);
    production[strcspn(production, "\n")] = '\0'; // Remove newline

    printf("%s operator precedent grammar\n",
           is_operator_precedent(production) ? "Operator precedent" : "Not operator precedent");

    return 0;
}