[C] Is this proper way of passing an array to be manipulated

[Jake Putz]

I have limited experience with C and some experience with C++. I am developing code to be used on a microcontroller (which is why I am using the keyword "unsigned") and I want to make sure I am doing this correctly. I want to fill an unfilled array in main using a subroutine, is this the proper way of passing a variable in this situation?

#include <stdio.h>
 
void fillZero(unsigned int *data[], unsigned int size);  //Function Prototype
 
int main(void) {
 
    unsigned int myData[2];
 
    fillZero(myData[], 2);
 
    // Additional code that uses the now filled array
 
    return(0);
 
}
 
void fillZero(unsigned int *data[], unsigned int size) {
 
    for (int i=0; i < size; i++) {
 
        data[i] = 0;
 
    }
 
}
 

Thank you for the help.

Jake

[Banfa]

Did it compile?

Any reason you can't just use memset from the C standard library?

void fillZero(unsigned int *data[], unsigned int size);  //Function Prototype

No this isn't right, [] used in a function prototype is equivalent to declaring a pointer so your type data has type unsigned int **, not what you mean I suspect.

Either us the * or use the [].

Loose the [] from line 9 where you call your function.