修改以下代码使其拥有友好的程序界面：#include stdioh#include stdlibh#include stringh run this program using the console pauser or add your own getch systempause or input loop typedef struct node char dstNet5;

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

typedef struct node{
char dstNet[5];
int distance;
char nextSkip[5];
}RTable;

RTable RT1[1000]; RTable RT2[1000]; int i,l1,l2;
char nearR1[5],nearR2[5];

void InitRTable( RTable* RT ){
printf("请为当前路由器添加路由表项(目的网络 距离 下一跳路由器)：\n");
for( i=0;i<1000;++i ){ scanf("%s%d%s",RT[i].dstNet,&RT[i].distance,RT[i].nextSkip);
if( RT[i].distance==0 ){
break;
}
}
l1 = i; }

void AddNearRouter(){
printf("\n请输入相邻路由器名称：\n");
scanf("%s",nearR1);
}

void InitNearRTable(){
printf("\n请为相邻路由器%s添加路由表项(目的网络 距离 下一跳路由器)：\n",nearR1);
for( i=0;i<1000;++i ){
scanf("%s%d%s",RT2[i].dstNet,&RT2[i].distance,RT2[i].nextSkip);
if( RT2[i].distance==0 ){
break;
}
}
l2 = i; }

void UpdateNearRTable ( RTable* RT2,char* nearR ){ int p; for( p=0;p<l2;++p ){ RT2[p].distance = RT2[p].distance + 1; strcpy( RT2[p].nextSkip,nearR ); } }

void UpdateRTable( RTable* RT1,RTable* RT2 ){
int p,q;//p——RT2[]，q——RT1[]
for( p=0;p<l2;++p ){
int finded=0;
for( q=0;q<l1;++q ){
if( strcmp( RT2[p].dstNet,RT1[q].dstNet )==0 ){
finded = 1;
if( strcmp( RT1[q].nextSkip,RT2[q].nextSkip )==0 ){
RT1[q].distance = RT2[p].distance;
}
else{ if( RT2[p].distance+1<RT1[q].distance ){
RT1[q].distance = RT2[p].distance;
strcpy( RT1[q].nextSkip,RT2[q].nextSkip );
}
}
}
}
if( !finded ){ strcpy( RT1[l1].dstNet,RT2[p].dstNet );
RT1[l1].distance = RT2[p].distance;
strcpy( RT1[l1].nextSkip,RT2[p].nextSkip ); ++l1;
}
}
}

void Print1(){
printf("\n当前路由器的路由表：\n");
}

void Print2(){
printf("\n相邻路由器%s的路由表：\n",nearR1);
}

void PrintRTable( RTable* RT,int len ){
printf("目的网络\t距离\t下一跳路由器\n");
for( i=0;i<len;++i ){
printf("%s\t\t%d\t%s\n",RT[i].dstNet,RT[i].distance,RT[i].nextSkip);
}
printf("\n");
}

void Print_Update(){ UpdateRTable(RT1,RT2);
printf("\n当前路由器更新后的路由表：\n");
PrintRTable(RT1,l1);
}

int main()
{
printf("欢迎使用距离向量算法的过程模拟！\n");
InitRTable(RT1);
while(1){
printf("\n是否有新的路由信息？（输入0退出，输入1继续）\n"); int choose;
scanf("%d",&choose);
if( choose==1 ){ AddNearRouter();
InitNearRTable();
Print1();
PrintRTable(RT1,l1);
Print2();
PrintRTable(RT2,l2);
printf("\n修改后的路由信息：\n"); UpdateNearRTable(RT2,nearR1); PrintRTable(RT2,l2); Print_Update();
} else if( choose==0 ){ break; } } printf("\n更新完毕！\n\n"); return 0;