Given:
int a[N];
int *p;
why does a-p work yet a+p does not with error: “invalid operands to binary +”.
Given: int a[N]; int *p; why does a-p work yet a+p does not with
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Given:
int a[N];
int *p;
why does a-p work yet a+p does not with error: “invalid operands to binary +”.
The difference between two pointers is meaningful, i.e. it is the number of elements between the two pointers (provided that they both lie within the same array).
Adding two pointers makes no sense though (how would you interpret it ?).