有一个C语言程序设计的问题，希望大家帮下忙
#include<stdlib.h>
#include<time.h>
#include<string.h>
long u,v;
void output1();
void output2();
void verify();
void main()
{
int n;
printf(" 1.输出回文数\n");
printf(" 2.输出三重回文数\n");
printf(" 3.验证猜想\n");
printf(" 0.退出\n\n\n");
printf("请输入选项:");
scanf("%d",&n);
switch(n)
{
case 1:output1();break;
case 2:output2();break;
case 3:verify();break;
case 0:break;
}
}
void output1()
{
int i,l1,l2,m,n,t,p=0;
srand((unsigned)time(NULL));
m=rand();
n=rand() % 17232;
l1=m+n;
m=rand();
n=rand() % 17232;
l2=m+n;
if(l1>l2)
t=l1,l1=l2,l2=t;
printf("随机产生的两个小于50000的正整数为:%d %d\n",l1,l2);
printf("介于%d和%d之间的所有回文数为:\n",l1,l2);
for(i=l1;i<=l2;i++)
{
int data[20],d=0,j=0,x,y,g=i;
while(g>0)
{
data[j++]=g%10;
g/=10;
}
for(x=0,y=j-1;x<y&&data[x]==data[y];x++,y--);
if(x>=y)
{
printf("%-6d",i);
p=p+1;
}
if(p==5)
{
printf("\n");
p=0;
}
}
printf("\n");
printf("请输入选项:");
scanf("%d",&n);
switch(n)
{
case 1:output1();break;
case 2:output2();break;
case 3:verify();break;
case 0:break;
}
}
int judge(int g)
{
int x,y,j=0,data[20];
while(g>0)
{
data[j++]=g%10;
g/=10;
}
for(x=0,y=j-1;x<y&&data[x]==data[y];x++,y--);
if(x>=y)
return 1;
else
return 0;
}
void output2()
{
int l,m,n,i,p=0;
srand((unsigned)time(NULL));
m=rand();
n=rand() % 17232;
l=m+n;
printf("随机产生的一个小于50000的正整数为:%d\n",l);
printf("小于%d的所有三重回文数为:\n",l);
for(i=0;i<=l;i++)
{
int l1,l2,l3;
l1=i,l2=i*i,l3=i*i*i;
if(judge(l1)==1&&judge(l2)==1&&judge(l3)==1)
{
printf("%6d",i);
p=p+1;
}
if(p==5)
{
printf("\n");
p=0;
}
}
printf("\n");
printf("请输入选项:");
scanf("%d",&n);
switch(n)
{
case 1:output1();break;
case 2:output2();break;
case 3:verify();break;
case 0:break;
}
}
int judge2(long g)
{
int x,y,j=0,data[20];
while(g>0)
{
data[j++]=g%10;
g/=10;
}
for(x=0,y=j-1;x<y&&data[x]==data[y];x++,y--);
if(x>=y)
return 1;
else
return 0;
}
long readd(long x)
{
int j=0,data[20],k,o;
long g=x;
while(g>0)
{
data[j++]=g%10;
g/=10;
}
for(k=0;k<j;k++)
{
o=j-1-k;
while(o)
{data[k]*=10;
o-=1;}
u+=data[k];
}
return v=x+u;
}
void verify()
{
int l,m,n,t;
srand((unsigned)time(NULL));
m=rand();
n=rand() % 17232;
l=m+n;
t=l;
printf("随机产生的一个小于50000的正整数为:%d\n",l);
while(judge2(l)==0)
{
readd(l);
l=v,u=0;
}
printf("构造出的回文数为%d\n",l);
printf("其构造过程为:\n");
u=0,v=0;
while(judge2(t)==0)
{
readd(t);
printf("%6d+%6d=%6d\n",t,u,v);
t=v,u=0;
}
printf("请输入选项:");
scanf("%d",&n);
switch(n)
{
case 1:output1();break;
case 2:output2();break;
case 3:verify();break;
case 0:break;
}
}
1 2 还好。第3个结论都是错的，验证个啥子呀！
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