负载均衡集群和高可用集群怎么区分？

 分解： 
 
 
 
 8表示你想显示8位数字 
 
 
 0 ，你想以0为前缀而不是空格 
 
 
 x表示要以小写十六进制打印。 
 
 
 快速示例（感谢Grijesh Chauhan）： 
 
#include <stdio.h>
int main() {
    int data = 29;
    printf("%x\n", data);    // just print data
    printf("%0x\n", data);   // just print data ('0' on its own has no effect)
    printf("%8x\n", data);   // print in 8 width and pad with blank spaces
    printf("%08x\n", data);  // print in 8 width and pad with 0's

    return 0;
}
 
 输出： 
 
1d
1d
      1d
0000001d
 
 另请参阅http://www.cplusplus.com/reference/cstdio/printf/以供参考。 

Break-down:
 
 
 
8 says that you want to show 8 digits
 
 
0 that you want to prefix with 0's instead of just blank spaces
 
 
x that you want to print in lower-case hexadecimal.
 
 
Quick example (thanks to Grijesh Chauhan):
 
#include <stdio.h>
int main() {
    int data = 29;
    printf("%x\n", data);    // just print data
    printf("%0x\n", data);   // just print data ('0' on its own has no effect)
    printf("%8x\n", data);   // print in 8 width and pad with blank spaces
    printf("%08x\n", data);  // print in 8 width and pad with 0's

    return 0;
}
 
Output: 
 
1d
1d
      1d
0000001d
 
Also see http://www.cplusplus.com/reference/cstdio/printf/ for reference.