Functions

In C, functions specify the types for their arguments and return value.

float add(int x, int y) {
    return (float)(x + y);
}

The first type, float is the return type.
add is the name of the function.
int x, int y are the parameters to the function, and their types are specified.
x + y adds the two arguments together.
(float) casts the result to a float.
- We'll talk more about what cast means later, and the rules for casting to and from certain types.
- The simple version is that it instructs C to treat the result of x + y as a float.

Here's how you would call this function:

int main() {
    float result = add(10, 5);
    printf("result: %f\n", result);
    // result: 15.000000
    return 0;
}

It's nice that C functions enforce returning the same type from all return statements, isn't it? In Python, it can be a pain to realize that a function returns different types depending on the path it took.

Assignment

Write a max_sneklang_memory function in the space provided. It should:

accept two arguments:
1. int max_threads
2. int memory_per_thread
return an integer representing the total memory available to the Sneklang interpreter

Tip

Multiplication is done with the * operator, just like most other languages.