指针数组的应用

#include <iostream>
using namespace std;
char const *keyword[]={"do","for","switch","return","while"};
int lookup_keyword(const char * const des,char const *keyword_table[],int constsize)
{
const char **kwp;
for (kwp=keyword_table;kwp<keyword_table+constsize;kwp++)
{
if (strcmp(*kwp,des)==0)
{
return kwp-keyword_table;
}
}
return -1;
}

void main()
{
cout<<lookup_keyword("while",keyword,5);
}