【C語言】找出1000以內可以被3整除的數

分別用while,do-while,for語句實現

方法一：while

#include<stdio.h>
 int main()
{
     int m;
     m = 1;
     while (m<=1000)
     {
         if (m % 3 == 0)
             printf("%5d", m);
         m = m + 1;
     }
    

}

方法二：do-whlie

#include<stdio.h>
 int main()
{
     int m;
     m = 1;
    do
     {
         if (m % 3 == 0)
             printf("%5d", m);
         m = m + 1;
    } 
    while (m <= 1000);

}

方法三：for

#include<stdio.h>
 int main()
{
     int m;
     for (m = 1; m <= 1000; m = m + 1)
         if (m % 3 == 0)
             printf("%5d", m);
}