#include <stdio.h>
 
int main() {
    float num1, num2, result;
    char op;
 
    // Input two numbers
    printf("Enter first number: ");
    scanf("%f", &num1);
 
    printf("Enter second number: ");
    scanf("%f", &num2);
 
    // Input operator
    printf("Enter an operator (+, -, *, /): ");
    scanf(" %c", &op);  // space before %c to ignore newline
 
    // Perform operation using if-else
    if (op == '+') {
        result = num1 + num2;
        printf("Result: %.2f + %.2f = %.2f\n", num1, num2, result);
    }
    else if (op == '-') {
        result = num1 - num2;
        printf("Result: %.2f - %.2f = %.2f\n", num1, num2, result);
    }
    else if (op == '*') {
        result = num1 * num2;
        printf("Result: %.2f * %.2f = %.2f\n", num1, num2, result);
    }
    else if (op == '/') {
        if (num2 != 0) {
            result = num1 / num2;
            printf("Result: %.2f / %.2f = %.2f\n", num1, num2, result);
        } else {
            printf("Error: Division by zero is not allowed.\n");
        }
    }
    else {
        printf("Invalid operator!\n");
    }
 
    return 0;
}