1 #import <Foundation/Foundation.h>
2
3 /*
4 求字符串长度
5 */
6 int stringLength(char arr[]);
7
8
9 /*
10 复制字符串
11 将arr1 复制到 arr
12 */
13 void stringCopy(char arr[],char arr1[]);
14
15
16
17 /*
18 拼接字符串
19 将arr1 加到 arr 后
20 */
21 void stringCatch(char arr[],char arr1[]);
22
23
24 /*
25 比较字符串
26 */
27 int stringCompare(char arr[],char arr1[]);
1 #import "FunctionOfArray.h"
2
3 int stringLength(char arr[]){
4 int length = 0;
5 while (arr[length] != ' ') {
6 length++;
7 }
8 return length;
9 }
10
11
12 void stringCopy(char arr[],char arr1[]){
13 int i = 0;
14 while (arr1[i] != ' ') {
15 arr[i] = arr1[i];
16 i++;
17 }
18 arr[i] = ' ';
19 }
20
21 void stringCatch(char arr[],char arr1[]){
22 int k = stringLength(arr);
23 int j = stringLength(arr1);
24 for (int i = 0; i < j; i++) {
25 arr[k+i] = arr1[i];
26 }
27 arr[k + j] = ' ';
28 }
29
30 int stringCompare(char arr[],char arr1[]){
31 int k = stringLength(arr);
32 int j = stringLength(arr1);
33
34 for (int i = 0; i < k && i< j; i++) {
35 if(arr[i] != arr1[i]){
36 return (int)arr[i] - (int)arr1[i];
37 }
38 }
39 if(k == j){
40 return 0;
41 }else if(k > j ){
42 return (int)arr[j] - (int)arr1[j];
43 }else{
44 return (int)arr[k] - (int)arr1[k];
45 }
46 }