What is a simple calculator in C?

 

Simple Calculator

Description: Create a console-based calculator that can perform basic arithmetic operations such as addition, subtraction, multiplication, and division.

Key Features:

• Input two numbers and an operator (+, -, *, /).
• Display the result.
• Handle division by zero.

#include <stdio.h>

int main() {

    char operator;

    float num1, num2, result;

    printf("Enter first number: ");

    scanf("%f", &num1);

    printf("Enter an operator (+, -, *, /): ");

    scanf(" %c", &operator);

    printf("Enter second number: ");

    scanf("%f", &num2);

    switch (operator) {

        case '+':

            result = num1 + num2;

            break;

        case '-':

            result = num1 - num2;

            break;

        case '*':

            result = num1 * num2;

            break;

        case '/':

            if (num2 != 0) {

                result = num1 / num2;

            } else {

                printf("Error! Division by zero.\n");

                return 1;

            }

            break;

        default:

            printf("Invalid operator!\n");

            return 1;

    }

    printf("Result: %.2f\n", result);

    return 0;

}