求大神把下面代码中的错误搞定！！

Question

#include
#include
#include
typedef struct
{
int a;
int b;
} DOUBLE_INT, *Double_int;

Double_int a[4];

int main()
{
int i;

for ( i=0; i < 4; i++)
{
    a[i]->a = (i+1);

    a[i]->b = (i+1)<<1;

}

for ( i=0; i < 4; i++)

{
    if (a[i]-> a & 1)

        printf("a is Odd : a.a = %d a.b = %d\n",a[i]->a,a[i]->b);

    else

        printf("a is even: a.a = %d a.b = %d\n",a[i]->a,a[i]->b);
}
return 0;

}

Answer 1

#include

typedef struct {
int a;
int b;
} Double_int;

Double_int *a[4];

int main() {
int i;

for (i = 0; i < 4; i++) {
    a[i] = new Double_int;

    a[i]->a = (i + 1);

    a[i]->b = (i + 1) << 1;

}
for (i = 0; i < 4; i++)

{
    if (a[i]->a & 1)

        printf("a is Odd : a.a = %d a.b = %d\n", a[i]->a, a[i]->b);

    else

        printf("a is even: a.a = %d a.b = %d\n", a[i]->a, a[i]->b);
}
return 0;

}