type casting void pointer to struct type

Question

How do I type cast a void pointer to a struct array? Here is my code:

typedef struct{
    int   a;
    double b;
} myStruct;

void Func1(void * Array1);

int main(){
    myStruct S1[5];

    S1[0].a = 1;
    S1[0].b = 2.3;

    S1[1].a = 2;
    S1[1].b = 3.4;

    Func1(S1);

    return 0;
}

void Func1(void * Array1){
    myStruct S2[5];

    S2[0] = (myStruct *)Array1[0];
}

I get compile errors in Func1 for assigning S2[0] . How do I typecast the Array1 correctly?

Answer 1

[] operator has a higher precedence that a (cast) operator. Thus you have to use additional parenthesis:

 S2[0] = ((myStruct *)Array1)[0];

or use a pointer:

myStruct* a = Array1 ;
S2[0] = a[0];