020. C语言基础

//  191.c
#include
int max(int a,int b)
{
   return a>b?a:b;
}
int min(int a,int b)
{
   return a>b?b:a;
}
int fun(int a,int b,int (*p)())
{
    return p(a,b);
}
void main()
{
   int a=3,b=2,(*p)();
   printf("%d",fun(a,b,min));
   getch();
}

//  192.c
#include
char *fun(char a[],int n)
{
   return a+n-1;
}
void main()
{
   char a[]="blacksheepwall";
   printf("%s",fun(a,2));
   getch();
}

//     193.c
#include
void main()
{
   char *a[]={"how","do","you","turn","this","on"},i,j,*p;
   for(i=0;i<5;i++)
     for(j=i+1;j<6;j++)
     {
        if(strcmp(a[i],a[j])>0)
        {
           p=a[i];a[i]=a[j];a[j]=p;
        }
     }
    for(i=0;i<6;i++)
      puts(a[i]);
    getch();
}

//  194.c
#include
void main()
{
   char *a[]={"how","do","you","turn","this","on"},**p,**q,*t;
   for(p=a;p0)
        {
           t=*p;*p=*q;*q=t;
        }
     }
    for(p=a;p

//   195.c
#include
#include
void main()
{
   int i,j,*p,*q;
   p=(int *)malloc(sizeof(int));
   *p=1;
   printf("%3d\n",*p);
   for(i=1;i<10;i++)
     {
       q=p;
       p=(int *)malloc(sizeof(int)*(i+1));
       for(j=0;j

//  196.c
#include
#include
void main()
{
   int i,j,*a[10];
   for(i=0;i<10;i++)
     a[i]=(int *)malloc(sizeof(int)*(i+1));
   for(i=0;i<10;i++)
     for(j=0;j<=i;j++)
       if(j==0||i==0||i==j)a[i][j]=1;
       else a[i][j]=a[i-1][j-1]+a[i-1][j];
   for(i=0;i<10;i++,printf("\n"))
     for(j=0;j<=i;j++)
       printf("%3d",a[i][j]);
   getch();
}

//    197.c
#include
#include
void fun(int n)
{
   int **p,i,j;
   p=(int **)malloc(sizeof(int)*n);
   for(i=0;i

//   198.c
#include
#include
void fun(int n)
{
   int **p,i,j,**q;
   p=(int **)malloc(sizeof(int));
   **p=1;
   printf("%5d",**p);
   for(i=1;i

//   199.c
#include "123.c"
void main()
{  
   int a;
   a=6;
   printf("%d",a);
   getch();
}

//   200.c
#include
//编译预处理重在预字
//预处理过程在编译之前已经完成
#define M 5
#define N M*M
void main()
{
   printf("%d",N);
   getch();
}