c语言编程求1到n中能被3或7整除的数之和。分别用for循环语句和while循环语句完成本题。谢谢

Question

如题所述

Answer 1

#include<stdio.h>
/*用for循环实现*/
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循环实现*/
#include<stdio.h>

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");
}