Pointer Comparison

# Pointer Comparison - • use pi here 8 Pointer Comparison...

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8: Pointer Comparison Two pointers of the same type, p and q , may be compared as long as both of them point to objects within a single memory block Pointers may be compared using the <, >, <=, >=, == , != When you are comparing two pointers, you are comparing the values of those

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8: Pointer Comparison Assuming double *p, *pi; and p pointing to the block of SIZE doubles: for(pi = p, product = 1; pi < p+SIZE ; pi++) product *= *pi;
Block Traversal for(pi = p; pi < p+SIZE; pi++)

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Unformatted text preview: • use pi here 8: Pointer Comparison • /* Find the largest element in the block p */ • double *max; • for(max = p, pi = p+1; pi < p+SIZE; pi++) • if(*max < *pi) • max = pi; "Block Traversal" Idiom 8: Pointer Comparison • Copy the contents of a block pointed to by p of size SIZE to • another block pointed to by q : • double *pi, *qi; • if(MALLOC(q, double, SIZE)) • exit(EXIT_FAILURE);...
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