题解 | 记数问题
记数问题
https://www.nowcoder.com/practice/28b2d9f2bf2c48de94a1297ed90e1732
#include <stdio.h>
int main() {
int n = 0;
int x = 0;
int count = 0;
scanf("%d %d", &n, &x);
for (int i = 1; i <= n; i++) {
int j = i;
while (j) {
if (j % 10 == x) {
count++;
}
j = j / 10;
}
}
printf("%d", count);
return 0;
}
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