#include <stdio.h>

int main() {
    char operator;
    double num1, num2;
    int keepGoing = 1; // flag to keep the loop going

    while (keepGoing) {
        // Ask the user to enter an operator
        printf("Enter an operator (+, -, *, /): ");
        scanf(" %c", &operator);

        // Ask the user to enter two operands
        printf("Enter two operands: ");
        scanf("%lf %lf", &num1, &num2);

        switch (operator) {
            case '+':
                printf("%.2lf + %.2lf = %.2lf\n", num1, num2, num1 + num2);
                break;
            case '-':
                printf("%.2lf - %.2lf = %.2lf\n", num1, num2, num1 - num2);
                break;
            case '*':
                printf("%.2lf * %.2lf = %.2lf\n", num1, num2, num1 * num2);
                break;
            case '/':
                if (num2 != 0.0)
                    printf("%.2lf / %.2lf = %.2lf\n", num1, num2, num1 / num2);
                else
                    printf("Error! Division by zero.\n");
                break;
            default:
                printf("Error! Operator is not correct.\n");
        }

        // Ask the user if they want to continue or exit
        char choice;
        printf("Do you want to perform another calculation? (y/n): ");
        scanf(" %c", &choice);

        if (choice == 'n' || choice == 'N') {
            keepGoing = 0;
        }
    }

    printf("Calculator exited.\n");
    return 0;
}