題目: http://zerojudge.tw/ShowProblem?problemid=c084 ------------------------------------------------------------------------------------------------------------------ #include<bits/stdc++.h> #define maxn 1000+1 using namespace std; int main() { int a,b; while(scanf("%d%d",&a,&b)!=EOF && a || b) { int x = 0,s1[maxn]={0},s2[maxn]={0}, len = 0, z = 0; s2[0] = a; while(1) { z = 0; x++; s1[x] = a * 10 / b; a = (a * 10) % b; s2[x] = a; if(!a) { len = -1; break; } for(int i=0;i<x;i++) { if(s2[x] == s2[i]) { z = 1; len = x - i; break; } } if(z) break; } printf("."); for(int i=1;i<=x;i++) { printf("%d",s1[i]); if((i + 1) % 50 == 0) printf("\n"); } printf("\n"); if(len > 0) printf("The last %d digits repeat forever.\n",len); if(len == -1) ...
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