配列とポインタ

明解Ｃ言語入門編 > 10. ポインタ >

C



#include <stdio.h>
int main(int argc, char* argv[])

{

    int i;

    int vc[] = {10, 20, 30, 40, 50};

    int* ptr = &vc[0];
    for (i = 0; i < 5; i++)

    {

        printf("vc[%d] = %d    "   , i, vc[i]);

        printf("ptr[%d] = %d    "  , i, ptr[i]);

        printf("*(ptr + %d) = %d\n", i, *(ptr + i));

    }

    puts("");
    ptr = vc;

    for (i = 0; i < 5; i++)

    {

        printf("vc[%d] = %d    "   , i, vc[i]);

        printf("ptr[%d] = %d    "  , i, ptr[i]);

        printf("*(ptr + %d) = %d\n", i, *(ptr + i));

    }
    return 0;

}

実行結果



T:\>lesson078\Project1.exe

vc[0] = 10    ptr[0] = 10    *(ptr + 0) = 10

vc[1] = 20    ptr[1] = 20    *(ptr + 1) = 20

vc[2] = 30    ptr[2] = 30    *(ptr + 2) = 30

vc[3] = 40    ptr[3] = 40    *(ptr + 3) = 40

vc[4] = 50    ptr[4] = 50    *(ptr + 4) = 50
vc[0] = 10    ptr[0] = 10    *(ptr + 0) = 10

vc[1] = 20    ptr[1] = 20    *(ptr + 1) = 20

vc[2] = 30    ptr[2] = 30    *(ptr + 2) = 30

vc[3] = 40    ptr[3] = 40    *(ptr + 3) = 40

vc[4] = 50    ptr[4] = 50    *(ptr + 4) = 50