代码片段1
#include <stdio.h>
int main()
{
unsigned int x = 100;
unsigned int y = 1;
int *p = &x;
printf("x=%d
", x);
//printf("lalalala%n
", p);
printf("%.66u%n
", y, p);
printf("x=%d
", x);
return 0;
}
代码片段2
#include <stdio.h>
int main()
{
unsigned int x = 0;
unsigned int y = 0;
int *p = &y;
printf("&x=%.8p, &y=%.8p
", &x, &y); // y地址比x地址大4,先定义的整型参数先入栈,地址更高
// printf("%.8p %.8p", p, (unsigned int*)p + 1); //(int)p+4);
printf("x=%d, y=%d
", x, y);
printf("000%n000000%n
", p, (unsigned int*)p + 1);
printf("x=%d, y=%d
", x, y);
return 0;
}
这是64位Ubuntu系统,对32位系统,代码中(unsigned int)应该改成(unsigned long)。因为64位系统unsigned long长度为8字节。