#includeint main() { long n,s,t; printf("请输入正整数n:"); scanf("%ld",&n); s = 0; t = 1; while(t <= n){ t *= 5; s += (n/t); } printf(" %ld! 尾部零的个数为：%ldn",n,s); return 0; }
#includeint main() { long n,s,t; printf("请输入正整数n:"); scanf("%ld",&n); s = 0; t = 1; while(t <= n){ t *= 5; s += (n/t); } printf(" %ld! 尾部零的个数为：%ldn",n,s); return 0; }
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