C 練習(四)

#include <stdio.h>void swap(int *p1,int *p2){    int p;    p = *p1;    *p1 = *p2;    *p2 = p;}void main(){   int a,b;   int *p1 = &a,*p2 = &b;   printf("請輸入兩個數:");   scanf("%d%d",&a,&b);   if(a<b){      swap(p1,p2);   }   printf("變數a 的值是%d 變數b的值是%d ",a,b);   return ;}//通過指標交換兩個數的值

#include <stdio.h>int *max(int c1[],int c2[], int*p, int *c){    int i;    int *m = &c1[0];    for(i=1;i<=2;i++){        if(*m < c1[i]){           *m  = c1[i];           *p = i;           *c = 1 ;        }    }    for(i=0;i<=2;i++){        if(*m < c2[i]){           *m = c2[i];           *p = i;           *c = 2;        }    }    return m;}void main(){    int c1[] = {1,2,3},c2[] = {4,5,6},n,c;    int *p ;    p = max(c1,c2,&n,&c);    printf("兩個數組中的最大值為%d,在%d數組中的第%d個位置",*p, n, c);   }