题解 | #挑7#
挑7
http://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
#include <stdio.h>
int main(void)
{
int n;
while(scanf("%d",&n)!=EOF)
{
int i,m,b;
int cnt=0;
for(i=1;i<=n;i++)
{
m=i;
while(m)
{
b=m%10;
m=m/10;
if(b==7||m==7||i%7==0){
cnt++;
break;
}
}
}
printf("%d\n",cnt);
}
} 
投递快手等公司10个岗位
