Programming-Problems/Basic/12.Implement a basic calculator for addition, subtraction, multiplication, and division/Solution.c at main · hasanulmukit/Programming-Problems · GitHub

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#include <stdio.h>

int main() {
    char operator;
    double num1, num2, result;

    printf("Enter the operator (+, -, *, /): ");
    scanf(" %c", &operator);

    printf("Enter the first number: ");
    scanf("%lf", &num1);

    printf("Enter the second number: ");
    scanf("%lf", &num2);

    switch (operator) {
        case '+':
            result = num1 + num2;
            printf("Result: %.2lf\n", result);
            break;
        case '-':
            result = num1 - num2;
            printf("Result: %.2lf\n", result);
            break;
        case '*':
            result = num1 * num2;
            printf("Result: %.2lf\n", result);
            break;
        case '/':
            if (num2 != 0) {
                result = num1 / num2;
                printf("Result: %.2lf\n", result);
            } else {
                printf("Error: Division by zero is not allowed.\n");
            }
            break;
        default:
            printf("Error: Invalid operator.\n");
    }

    return 0;
}