#include <stdio.h>
typedef unsigned char *byte_pointer;
void show_bytes(byte_pointer start, int len)
{
int i;
for(i= 0; i < len; i++)
{
printf("%.2x", start[i]);
}
printf("\n");
}
void show_int(int x)
{
show_bytes((byte_pointer)&x, sizeof(int));
}
void show_float(float x)
{
show_bytes((byte_pointer)&x, sizeof(float));
}
void show_pointer(void *x)
{
show_bytes((byte_pointer)&x,sizeof(void*)); //sizeof(void *)????
}
int main()
{
int ival = 10;
float fval = (float) ival;
int *pval = &ival;
show_int(ival);
show_float(fval);
show_pointer(pval);
return 0;
}
輸出是
0a000000
00002041
74ff2200
不明白怎么來(lái)的
尤其是那個(gè)
sizeof(void *)???? 、
還有那個(gè)printf("%.2x")和printf("%2x")有什么差別哦？？？