C语言学习笔记-指针与数组

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

void swap(int* px, int *py)
{
	int temp;
	temp = *px;
	*px = *py;
	*py = temp;

}

int main()
{
	int i = 1;
	int j = 2;
	printf("i = %d, j = %d\n", i, j);
	swap(&i, &j);
	printf("i = %d, j = %d\n", i, j);
	return 0;
}

运行结果:

i = 1, j = 2
i = 2, j = 1