C: Returns a pointer to the first identical element in two arrays (I used the loop, goto Loop label)

//

Main.c

Pointer_search

//

Created by Ma C on 15/8/2.

Copyright (c) 2015 BJSXT. All rights reserved.

Requirements: To compare elements in two ordered arrays by pointer lookup, and to output the first identical element value in two arrays.

#include <stdio.h>

int *searchsameelement (int *a,int *b,int len1,int len2);

int main (int argc, const char * argv[])

{

int a[] = {5,11,8,6,7,10};

int b[] = {80,9,14,8,14,19,4};

The following method of calculating the length of an array is common within a function, but if you pass it as an argument to an external function, the array name degrades to a pointer, and the method below calculates the length of the array does not apply.

int len1 = sizeof (a)/sizeof (a[0]); //Calculate the length of array a

int len2 = sizeof (b)/sizeof (b[0]); //Calculate the length of array b

int *pt = searchsameelement (A,B,LEN1,LEN2); //Returns the first same value address

if (PT)

printf ("%d\n", *pt);

Else

printf ("The same number don not find!\n");

return 0;

}

int *searchsameelement (int *a,int *b,int len1,int len2)

{

int *temp = A; //Initialize temporary pointer to prevent temp from becoming a wild pointer

for (int i=0;i<len1;i++)

{

for (int j=0;j<len2;j++)

{

if (* (a+i) ==* (b+j))

{

temp = A+i;

Goto Loop;

//Here means find the first same element, jump to the end, return a+i

}

if (J==LEN2)

{

Break //indicates that the first outer loop number is not found in the inner loop, and jumps to the outer loop to continue looking for

}

}

if (i== (len1-1))

{

temp = 0;

Goto Loop;

//Here indicates that the inner and outer loops do not find the first same element, jump to the end, return 0

}

}

Loop:return temp;

}

C: Returns a pointer to the first identical element in two arrays (I used the loop, goto Loop label)