int a[20] = {0};
for (int i =0; i < 20; i++) {
a[i] = arc4random() % 41 + 10;
printf("%d ", a[i]);
}
int max = a[0], min = a[0], second = a[0];
for (int i =0; i < 20; i++) {
if (a[i] > max) {
max = a[i];
}else if (a[i] < min)
min = a[i];
}
for (int i =0; i < 20; i++) {
if (a[i] == max) {
continue;
}else if (a[i] > second)
second = a[i];
}
printf("\n最大值为%d\n最小值为%d\n第二大值为%d\n", max, min, second);