struct {
		unsigned char a:4;
		unsigned char b:4;
	}i;
	for(i.a=1;i.a< =9;i.a++)
		for(i.b=1;i.b<=9;i.b++)
			if(i.a%3!=i.b%3)
				printf("A=%d , B=%dn",i.a,i.b);

#include <stdio .h>
#include <stdlib .h>
#include <ctype .h>
#define BUFSIZE 100
 
int stack[BUFSIZE];
int sp=0;
 
void push(int c)
{
	if(sp<bufsize )
		stack[sp++]=c;
	else
		printf("Error:stack full ,can't push %c n",c);
}
 
int pop(void)
{
	if(sp>0)
		return stack[--sp];
	else
	{
		printf("Error: stack empty n");
		return 0;
	}
}
 
void main(int argc , char* argv[])
{
	int i=1;
	int op2;
	if(argc<2)
	{
		printf("Usage: expr [parameter...] ");
	}
	while((--argc>0)&&((*++argv)[0]!='#'))
	{
		if(isdigit((*argv)[0]))
		{
			push(atoi(*argv));
		}
		else
		{
			switch((*argv)[0])
			{
			case '+' : push(pop()+pop()); break;
			case '-' :
				op2 = pop();
				push(pop()-op2);
				break;
			case '*' : push(pop()*pop()); break;
			case '/' :
				op2 = pop();
				if(op2!=0)
				{
					push(pop()/op2);
				}
				break;
			}
		}
		i++;
	}
	printf("result = %d",stack[0]);
	system("pause");
}
 
</bufsize></ctype></stdlib></stdio>

 
void itob(int n,char s[],int b)
{
	int i=0,j,k;
	char temp;
	while(n!=0)
	{
		k=n%b;
		s[i++]=(k< =9)?k+'0':k+'a'-10;
		n=n/b;
	}
	k=i;
	i--;
	for(j=0,i;j<i;j++,i--)
	{
		temp=s[j];
		s[j]=s[i];
		s[i]=temp;
	}
	s[k]='';
}

#include <stdio .h>
#include <stdlib .h>
 
int htoi(char s[])
{
	bool checkChar(char s);
	int i=0;
	long n=0 ;
	if(s[i]==0)
	{
		++i;
		if(s[i]=='x'||s[i]=='X')
			++i;
	}
	for(i;checkChar(s[i]);i++)
	{
		if(s[i]>='0'&&s[i]< ='9')
		{
			n = n*16+s[i]-'0';
		}
		if(s[i]>='a'&&s[i]< ='f')
		{
			n = n*16+s[i]-'a'+10;
		}
		if(s[i]>='A'&&s[i]< ='F')
		{
			n = n*16+s[i]-'a'+10;
		}
	}
}
 
	return n;
}
bool checkChar(char s)
{
	int temp = (int)s;
	if((temp>=48&&temp< =57)||(temp>=65&&temp< =70)||(temp>=97&&temp< =102))
	{
		return true;
	}
	else
		return false;
}
void main(int argc , char* argv[])
{
	char numstr[100];
	long number=0;
	gets(numstr);
 
	number=htoi(numstr);
	printf("16jinzhi: %s convert to 10jinzhi:%dn",numstr,number);
	system("pause");
}

#include <stdio .h>
#include <stdlib .h>
void main(int argc , char* argv[])
{
	int  nspace = 0;
	int  count =0 ;
	int wlen[30];
	int i;
    char c;
   for(i=0;i<30;i++)
   {
	  wlen[i]=0;
   }
    while((c=getchar()) != EOF){
        if(((c!=' '&&c!='t'&&c!='n')) && (nspace == 0))
		{   
            count++;
        }
        if(c==' '||c=='t'||c=='n'){   
			if(nspace==0)
			{
				wlen[count]++;
			}
            nspace++;
        }
        if((nspace >= 1) && ((c!=' '&&c!='t'&&c!='n')))
		{    
            nspace = 0;
			count=1;       
        }
    }
 
	for(i=1;i<30;i++)
	{
		if(wlen[i]!=0)
		{
			printf("word length equals to %d have %d n",i,wlen[i]);
		}
	}
 
	system("pause");
}
</stdlib></stdio>

#include  "stdio.h"
void main(int argc , char* argv[])
{
	int  nspace = 0;
    char c;
    c = getchar(); 
    while((c=getchar()) != EOF){
        if(((c!=' '&&c!='t'&&c!='n')) && (nspace == 0))
		{   
            putchar(c);
 
        }
        if(c==' '||c=='t'||c=='n'){                  
            nspace++;
        }
        if((nspace >= 1) && ((c!=' '&&c!='t'&&c!='n')))
		{    
            nspace = 0;
            putchar('n');
            putchar(c);
 
        }
 
    }
	system("pause");
}

 #include <stdio .h>
 #include <stdlib .h>
 #include <string .h>
 
 typedef struct child
 {
	int no ;
	struct child *next;
 }CHILD;
 void main()
 {
	CHILD *h, *p,*s;
	int m,n,i,count;
	printf("please input children's count:n");
	scanf("%d",&n);
	printf("please input From which to count:n");
	scanf("%d",&m);
	printf("please input From which to stand out: n");
	scanf("%d",&count);
	if((h=(CHILD *)malloc(sizeof(CHILD)))==NULL)
	{
		printf("Cannot assignment memory !n");
		exit(1);
	}
	printf("please enter the student id:");
	scanf("%d",&(h->no));
	h->next = NULL;
	p=h;
	for(i=1;i<n ;i++)
	{
		if((s=(CHILD *)malloc(sizeof(CHILD)))==NULL)
		{
			printf("Cannot assignment memory !n");
			exit(1);
		}
		p->next=s;
		printf("please enter the student id:");
		scanf("%d",&(s->no));
		s->next = NULL;
		p=s;
	}
	p->next = h;
    p=h;
	while(--m) 
	{	
		s=p;
		p=p->next;
	}
 
 
	while(n--)
	{
		for(i=1; i<count ; i++)
		{
			s=p;
			p=p->next;
		}
		s->next=p->next;
 
 
		printf("%4d ",p->no);
		if(n%10==0) printf("n");
 
		free(p);
		p=s->next;
	}
   system("pause");
 }
</count></n></string></stdlib></stdio>