P122 14

P122 第14题

法一(指针)

#include<stdio.h>#include<stdlib.h>#include<math.h>#include<conio.h>int main(){int s[]={1,2,3,4};int *pa=NULL, *pal=NULL;int N=sizeof(s)/sizeof(int);pal= pa=s;for(int i=0;i<N;++i){printf("%3d",*pa);pa++;}putchar('\n');while(--pa>=s) printf("%3d",*pa);putchar('\n');getch();return 0;}

法二(函数调用)

#include<stdio.h>#include<stdlib.h>#include<math.h>#include<conio.h>int Reverse(unsigned int s){   do{printf("%d",s%10);s=s/10;}while(s!=0);printf("\n");return 0;}int main(){int a;scanf("%d",&a);Reverse(a);return 0;}