C언어 보강 1일차 (3)

void main()

{

int a = 10;

double b = 3.5;

void *vp;

vp = &a;

printf(" a : %d", *(int *)vp);

vp = &b;

printf(" b : %f", *(double *)vp);

}

void reserve(double *pa, int size);

int main(void)

{

double ary[] = { 1.5, 20.1, 16.4, 2.3, 3.5 };

int i;

reserve(ary, sizeof(ary) / sizeof(*ary));

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

printf("%5.1lf", ary[i]);

}

printf("\n");

return 0;

}

void reserve(double *pa, int size)

{

double tmp = 0;

int j=0;

for (int i = 0; i < 5/2; i++)

{

tmp = pa[i];

pa[i] = pa[size - 1 - i];

pa[size - 1 - i] = tmp;

}

}