输入二

#include"stdio.h"#include"string.h"int main(int argc,int* argv[]){char* t;char *p1 = NULL,*p2 = NULL,*p3 = NULL;char ch1[20] = {0},ch2[20] = {0},ch3[20] = {0};p1 = ch1;p2 = ch2;p3 = ch3;printf("No.1");scanf("%s",p1);fflush(stdin);printf("No.2");scanf("%s",p2);fflush(stdin);printf("No.3");scanf("%s",p3);fflush(stdin);if(strcmp(p1,p2)>0){t = p1;p1 = p2;p2 = t;}if(strcmp(p1,p3)>0){t = p1;p1 = p3;p3 = t;}if(strcmp(p2,p3)>0){t = p2;p2 = p3;p3 = t;}printf("%s\n%s\n%s\n",p1,p2,p3);return 0;}