![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/08f790529822720edd29b47370cb0a46f31fab50?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
#include<
stdio.h>
#include <
stdlib.h>
#include<
string.h>
#include<malloc.h>
int iscs(int);
int main()
{
int w;
printf("输入1个整数:");
scanf("%d",&w);
if(iscs(w))
printf("可以被5整除");
else
printf("不能被5整除");
return 0;
}
int iscs(int w)//可以整除 返回true
{
char *p;
int i=0,sum=0,wSave=w;
while(1)//计算数字位数
{
if(wSave/10>0)
{
i++;
wSave=wSave%10;
}
else
break;
}
p=malloc(sizeof(char)*(i+2));
itoa(w,p,10);
for(i=0;i<strlen(p);i++)
{
sum=sum+(p[i]-'0')*(p[i]-'0');
}
if(sum%5==0)
{
return 1;
}
return 0;
}