程式碼是這樣的

#include

/*用for迴圈實現*/

void main()

{

int n;

int m;

printf("please input n\n");

scanf("%d",&n);

for(int i = 1; i <= n; i++)

if(i % 3 == 0 || i % 7 == 0)

{

m++;

printf("%-3d",i);

if(m % 10 == 0)

printf("\n");

}

printf("\n");

}

/* 用while迴圈實現*/

#include

void main()

{

int n;

int m;

int i = 1;

printf("please input n\n");

scanf("%d",&n);

while(i <= n)

{

if(i % 3 == 0 || i % 7 == 0)

{

m++;

printf("%-3d",i);

if(m % 10 == 0)

printf("\n");

}

i++;

}

printf("\n");

}