判断是否为回文数与斐波拉契序列问题

判断是否为回文数

# include <stdio.h>int  main(void){int val;int m;int sum = 0;printf("请输入要判断的数字：\n");scanf("%d",&val);m = val;while(m){sum = sum * 10+ m%10;m /= 10;}if(sum == val)printf("yes!\n");elseprintf("no!\n");return 0;}

斐波拉契序列：1,2,3,5,8,13,19，……

# include <stdio.h>int main(void){int n;int f1,f2,f3;int i;f1 = 1;f2 = 2;printf("请输入您要计算的序列：");scanf("%d",&n);if(1 == n){f3 = 1;}else if(2 == n){f3 = 2;}elsefor(i=3;i<=n;++i){f3 = f1 + f2;f1 = f2;f2 = f3;}printf("%d\n",f3);return 0;}