输入一个小于8位数的正整数,判断它是不是回文数?答:int n,m,t;printf("Enter a positive integer...\nn=");if(scanf("%d",&n)!=1 || n<1 || n>99999999){ printf("Input error, exit...\n");return 0;} for(t=0,m=n;m;(t*=10)+=m%10,m/=10);printf("%d is %s%s\n",n,(n==t ? "a" : "not a")," ...