题解 | #数位五五#
数位五五
https://www.nowcoder.com/practice/4306996b0a534178b90b3514a8b30028
#include <stdio.h> int main() { int a,b; scanf("%d %d",&a,&b); int count=0; for(int i=a;i<=b;i++) { int sum=0; int num=i; while(num) { sum+=num%10; num/=10; } if(sum%5==0) count++; } printf("%d",count); return 0; }