So I made a very simple calculator in C that allows the user to perform calculations like addition, subtraction, multiplication and division. This is my first C program that I've made outside of my University course. Would be great to get some feedback on this program so that I can avoid bad practices early on in my coding.

I made a very simple calculator in C that allows the user to perform calculations like addition, subtraction, multiplication and division. This is my first C program that I've made outside of my University course. It would be great to get some feedback on this program so that I can avoid bad practices early on in my coding.

Couldn't post the code here since I couldn't figure out how to get the "#include" to appear properly.

Here's a Gist GitHub instead: [A simple calculator made in C][1]

Here's a Gist GitHub instead: A simple calculator made in C

Here's a Gist GitHub instead: [A simple calculator made in C][1]

//Calculator program
#include <stdio.h>
#include <stdlib.h>
 
int main()
{
    int menu; //Variable for the number the user inputs
    float num1, num2, result; //Float variables for the user input and output, used floats in case the user enters e.g. 14.7
 
    printf("Enter a number from the list below\n\n");
 
    printf("1. Addition\n"); //Calculator menu, user must enter a value from 1 - 4 for the program to work
    printf("2. Subtraction\n");
    printf("3. Multiplication\n");
    printf("4. Division\n\n");
 
    printf("Enter number: "); //User input for the calculator menu
    scanf("%d", &menu);
 
    printf("\n");
 
    switch(menu) //switch statement for menu
    {
    case 1:
        printf("You entered Addition\n\n");
 
        printf("Enter first number: "); //User input for first number
        scanf("%f", &num1);
 
        printf("Enter second number: "); //User input for second number
        scanf("%f", &num2);
 
        printf("\n");
 
        result = num1 + num2; //Addition calculation
 
        printf("%.2f + %.2f = %.2f\n", num1, num2, result); //Addition output
        break;
    case 2:
        printf("You entered Subtraction\n\n");
 
        printf("Enter first number: "); //User input for first number
        scanf("%f", &num1);
 
        printf("Enter second number: "); //User input for second number
        scanf("%f", &num2);
 
        printf("\n");
 
        result = num1 - num2; //Subtraction calculation
 
        printf("%.2f - %.2f = %.2f\n", num1, num2, result); //Subtraction output
        break;
    case 3:
        printf("You entered Multiplication\n\n");
 
        printf("Enter first number: "); //User input for first number
        scanf("%f", &num1);
 
        printf("Enter second number: "); //User input for second number
        scanf("%f", &num2);
 
        printf("\n");
 
        result = num1 * num2; //Multiplication calculation
 
        printf("%.2f * %.2f = %.2f\n", num1, num2, result); //Multiplication Output
        break;
    case 4:
        printf("You entered Division\n\n");
 
        printf("Enter first number: "); //User input for first number
        scanf("%f", &num1);
 
        printf("Enter second number: "); //User input for first number
        scanf("%f", &num2);
 
        printf("\n");
 
        result = num1 / num2; //Division calculation
 
        printf("%.2f / %.2f = %.2f\n", num1, num2, result);
        break;
    default:
        printf("Enter correct number e.g 1 - 4\n"); //Outputted if the user enters a value other than 1 - 4
        break;
    }
    return 0;
}
//End of code