C语言深入分析数组指针和指针数组的应用

#include <stdio.h>
 
typedef int(AINT5)[5];
typedef float(AFLOAT10)[10];
typedef char(ACHAR9)[9];
 
int main()
{
    AINT5 a1;
    float fArray[10];
    AFLOAT10* pf = &fArray;
    ACHAR9 cArray;
    
    char(*pc)[9] = &cArray;
    char(*pcw)[4] = cArray;   
    
    int i = 0;
    
    printf("%d, %d\n", sizeof(AINT5), sizeof(a1));
    
    for (i = 0; i < 10; i++)
    {
        (*pf)[i] = i;   // ==> fArray[i] = i;
    }
    
    for(i = 0; i < 10; i++)
    {
        printf("%f\n", fArray[i]);
    }
    
    printf("%p, %p, %p\n", &cArray, pc + 1, pcw + 1);
    
    return 0;
}

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