Structs containing arrays as parameters

Structs may contain arrays --but remember that struct arguments will be copied unless pointers are used.

typedef struct {

int a[10];

} Ray;

void isCopied(Ray r) {

r.a[2]= -1; /* Doesn�t change the argument */ }

void notCopied(Ray * r) {

r.a[2]= -1; /* Changes the argument */ }

void main (void) {

Ray a;

isCopied(a);

notCopied(&a);

}

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