算法题-小学生算术

#include <stdio.h> int main(void){ int n,m,sum,i; while(1){ scanf("%d%d",&m,&n); if(m==0&&n==0) break; i = sum = 0; while(m>0&&n>0){ sum=sum/10+m%10+n%10; if(sum >= 10){ ++i; } m/=10; n/=10; } printf("%d\n",i); } return 0; }