简单分析C语言中指针数组与数组指针的区别

#include <stdio.h> 
#include <string.h> 
 
int lookup_keyword(const char*key, const char* table[], const int size) 
{ 
  int ret = -1; 
 
  int i = 0; 
 
  for(i=0; i<size; i++) 
  { 
    if (strcmp(key, table[i]) == 0) 
    { 
      ret = i; 
      break; 
    } 
  } 
  return ret; 
} 
 
#define DIM(array) (sizeof(array)/sizeof(*array)) 
 
int main() 
{ 
  const char* keyword[] = { 
      "do", 
      "for", 
      "if", 
      "register", 
      "switch", 
      "while", 
      "case", 
      "static", 
  }; 
 
  printf("%d\n", lookup_keyword("static", keyword, DIM(keyword))); 
 
  return 0; 
} 

#include <stdio.h> 
 
int main() 
{ 
  int i; 
  int* pI = &i; //普通类型 
 
  typedef int(AINT5)[5]; 
  AINT5* p1; 
  int array[5]; 
  p1 = &array; //数组指针1 
 
  int (*p2)[5] = &array; //数组指针2(不建议这样写) 
 
  int (*p3)[4] = &array; // X 数组指针3(不建议这样写) 
 
  return 0; 
} 

typedef int* pInt;
pInt a[4];

#include <iostream>
 
using namespace std;
 
int main()
{
int c[4]={1,2,3,4};
int *a[4]; //指针数组
int (*b)[4]; //数组指针
b=&c;
//将数组c中元素赋给数组a
for(int i=0;i<4;i++)
{
a[i]=&c[i];
}
//输出看下结果
cout<<*a[1]<<endl; //输出2就对
cout<<(*b)[2]<<endl; //输出3就对
return 0;
}