C语言基础：输出100以内的奇数和偶数

#include <stdio.h>

int main()
{
int counter;

printf("\nEven values\n");
for (counter = 1; counter <= 100; counter++)
{
if (!(counter % 2)) // Even
printf("%d ", counter);
}

printf("\nOdd values\n");
counter = 0;
while (counter <= 100)
{
counter++;

if (counter % 2) // Odd
printf("%d ", counter);
}

return 1;
}