这c语言题怎么做？

输入一个4位正整数，求出对应位的数字并输出，最后将千位和十位互换，百位和个位互换并输出。

#include "stdio.h"
void main()
{
int ge,shi,bai,qian,m;
printf("请输入一个四位数：");
scanf("%d",&m);

ge=m%10;
shi=m/10%10;
bai=m/100%10;
qian=m/1000;
printf("\n这个数的千位，百位，十位，个位分别为：%d %d %d %d\n",ge,shi,bai,qian);

//最后将千位和十位互换，百位和个位互换并输出
printf("千位和十位互换，百位和个位互换后得到的数是：%d\n",shi*1000+ge*100+qian*10+bai);
}

#include <stdio.h> int main(int argc, char *argv[]) { int num,ge,shi,bai,qian,new_num; printf("input num(1000-9999):"); scanf("%d",&num); qian=num/1000; bai=num/100%10; shi=num/10%10; ge=num%10; new_num=shi*1000+ge*100+qian*10+bai; printf("the qian is %2d,the bai is %2d\nthe shi is %2d,the ge is %2d\n",qian,bai,shi,ge); printf("the new number is %6d\n",new_num); return 0; }

#include <stdio.h> void main() { int num; int q,b,s,g; printf("请输入4位数:"); scanf("%d",&num); q=num/1000; b=num/100%10; s=num/10%10; g=num%10; num=s*1000+g*100+q*10+b; printf("千位:%d,百位:%d,十位:%d,个位:%d,互换后:%d",q,b,s,g,num); }

#include <stdio.h>

void main() { int i,t1,t2,t3,t4; scanf("%d",&i); t1=i/1000; t2=i%1000/100; t3=i%100/10; t4=i%10; printf("%d %d %d %d\n",t1,t2,t3,t4); //分别输出每一位. i=t3*1000+t4*100+t1*10+t2; printf("%d\n",i); //输出位数调换后的数. }

效果如图: