C语言指针数组练习代码

#include<stdio.h> int main() { int a[] = { 3,-4,9,11,-23,9,14,-7,-10,5 }; int i; void absolute(int* x, int y); printf("Values before absolute; "); for (i = 0; i < 10; i++) printf("%d ", a[i]); printf("\n"); absolute(a, 10); printf("Values after absolute: "); for (i = 0; i < 10; i++) printf("%d ", a[i]); printf("\n"); return 0; } void absolute(int* x, int y) { int i; for (i = 0; i < 10; i++, x++) { if (*x < 0) *x = -*x; } }