辨认有效的ip地址和子网掩码并分类：
按行输入多组数据
10.8.9.2~255.0.0.0
180.8.9.2~255.254.0.0
打印：A B C D E 毛病的ip或掩码 私有ip 的个数
#include "stdio.h"
#include "stdlib.h"
#include "string.h"
#define MAX_PATH 256
int maze[10][10] = {0};
int route[100][2] = {0};
int impl(char *ip,char *mask,int *privateIp)
{
char *a = strtok(ip,".");
char *b = strtok(NULL,".");
char *c = strtok(NULL,".");
char *d = strtok(NULL,".");
if (!(a && b && c && d))
{
return 5;
}
int ai = atoi(a);
int bi = atoi(b);
int ci = atoi(c);
int di = atoi(d);
// char *a1 = strtok(mask,".");
// char *b1 = strtok(NULL,".");
// char *c1 = strtok(NULL,".");
// char *d1 = strtok(NULL,".");
if(ai>0 && ai<=126 && strcmp(mask,"255.0.0.0")==0)
{
if (ai==10 && bi>=0 && bi<=255)
{
*privateIp = 1;
}
return 0;
}
else if(ai>=128 && ai<=191 && strcmp(mask,"255.255.0.0")==0)
{
if (ai==172 && bi>=16 && bi<=31)
{
*privateIp = 1;
}
return 1;
}
else if(ai>=192 && ai<=223 && strcmp(mask,"255.255.255.0")==0)
{
if (ai==192 && bi==168)
{
*privateIp = 1;
}
return 2;
}
else if(ai>=224 && ai<=239)
{
return 3;
}
else if(ai>=240 && ai<=255)
{
return 4;
}
else
{
return 5;
}
}
int main()
{
// char test[4][100]={"10.70.44.68~255.254.255.0",
// "1.0.0.1~255.0.0.0",
// "192.168.0.2~255.255.255.0",
// "19..0.~255.255.255.0"};
int result[7] = {0};
char test[100] = {0};
while(scanf("%s",test)!=EOF)
{
char *ip = strtok(test,"~");
char *mask = strtok(NULL,"~");
int n = impl(ip,mask,&result[6]);
result[n]++;
}
// for (int i=0;i<4;i++)
// {
// char *ip = strtok(test[i],"~");
// char *mask = strtok(NULL,"~");
// int n = impl(ip,mask,&result[6]);
// result[n]++;
// }
for (int i=0;i<7;i++)
{
printf("%d ",result[i]);
}
return 0;
}