diff options
Diffstat (limited to 'csci5271/hw1/hw1p4.c')
| -rw-r--r-- | csci5271/hw1/hw1p4.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/csci5271/hw1/hw1p4.c b/csci5271/hw1/hw1p4.c index e449de5..4526e43 100644 --- a/csci5271/hw1/hw1p4.c +++ b/csci5271/hw1/hw1p4.c @@ -1,11 +1,13 @@ #include <stdio.h> /* Reverse the elements from FROM to TO, inclusive */ -void reverse_range(int *a, int from, int to) { +void reverse_range(int *a, int from, int to) +{ unsigned int *p = &a[from]; unsigned int *q = &a[to]; /* Until the pointers move past each other: */ - while (!(p == q + 1 || p == q + 2)) { + while (!(p == q + 1 || p == q + 2)) + { /* Swap *p with *q, without using a temporary variable */ *p += *q; /* *p == P + Q */ *q = *p - *q; /* *q == P + Q - Q = P */ @@ -15,11 +17,14 @@ void reverse_range(int *a, int from, int to) { q--; } } -int main() { + +int main() +{ int a[10] = {255, 0, -65536, 2147483647, -2147483648, - -1, 0, 1, 2, 3}; - reverse_range(a, 0, 9); - for (int i = 0; i < 10; i++) { + -1, 0, 1, 2, 3}; + reverse_range(a, 9, 0); + for (int i = 0; i < 10; i++) + { printf("%d ", a[i]); } printf("\n"); |