@[wenzhang](/space/show?uid=36090) 别开文件操作试试
by ljc1301 @ 2017-11-04 18:28:52
忘了
```cpp
#include<bits/stdc++.h>
using namespace std;
int n, x, sum, i, i1;
int main()
{
scanf("%d%d", &n, &x);
for(i = 1; i <= n; i++)
{
i1 = i;
while(i1)
{
if(i1 % 10 == x)
sum++;
i1 /= 10;
}
}
printf("%d", sum);
return 0;
}
```
by wenzhang @ 2017-11-04 18:29:54
sum没有初始值，要赋值为0，要不然的话不一定是什么东西。
by hjfzzm @ 2017-11-04 19:26:23
main函数外变量自动赋值为0
by awask @ 2017-11-04 20:28:25