#include <stdio.h>
#define MAX 20
int search(int *apt,/*已知数表的首元指针*/
int n,/*数表中元素个数*/
int key)/*要寻找的值*/
{
int *p;
for(p=apt;p<apt+n;p++)
if(*p==key)
return p-apt;/*返回找到元素的下标*/
return -1;
}
int *find(int *apt,/*已知数表的首元指针*/
int n,/*数表中元素个数*/
int key)/*要寻找的值*/
{
int *p;
for(p=apt;p<apt+n;p++)
if(*p==key)
return p;/*返回找到元素的指针*/
return NULL;
}
int a[]={90,80,70,60,50,40,30,20,10,9,8,7,6,5,42,40,50,1,2,3};
main()
{
int i,key;
clrscr();
printf(“The elements of array a is:n”);
for(i=0;i<sizeof(a)/sizeof(a[0]);i++)
printf(” %d”,a[i]);
printf(“nThe address of a[0] is: %d.n”,&a[0]);
puts(“nPlease input the key number you want to search:”);
scanf(“%d”,&key);
i=search(a,sizeof(a)/sizeof(a[0]),key);
printf(“nThe label number of the key number %d in the array is: %d.”,key,i);
printf(“nThe point value of the key number %d in the array is: %d.”,key,find(a, sizeof(a)/sizeof(a[0]),key));
puts(“nn Press any key to quit…”);
getch();
}
转自公众号：
南昌青少年编程