Easy to creating a Simple calculator in C.

Posted on: October 1, 2024 in C programme ,

Here’s a simple calculator program in C that performs basic operations such as addition, subtraction, multiplication, and division:

c

#include <stdio.h>

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

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

    // Input two numbers from the user
    printf("Enter two numbers: ");
    scanf("%lf %lf", &num1, &num2);

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

    return 0;
}

Explanation:

1. The program asks the user to input an operator (+, -, *, /).

2. The user is then prompted to input two numbers.

3. Based on the operator provided, the program calculates the result and displays it.

4. For division, the program checks if the divisor is zero to prevent division by zero errors.

Example Output:

c result

Enter an operator (+, -, *, /): +
Enter two numbers: 5 10
5.00 + 10.00 = 15.00

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Easy to creating a Simple calculator in C.

c

Explanation:

c result

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