字符串反轉---指針，反轉---指針

字符串反轉---指針，反轉---指針

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include<stdio.h>
 3 #include<stdlib.h>
 4 #include<string.h>
 5 
 6 int inverse(char *str1,char *str2)
 7 {
 8     char *p1 = str1;
 9     char *p2 = str2;
10     while (p1 < p2)
11     {
12         char c = *p1;
13         *p1 = *p2;
14         *p2 = c;
15 
16         ++p1;
17         --p2;
18     }
19     return 0;
20 }
21 int main()
22 {
23     char buf[] = "abcdefg";
24     char *p1 = buf;
25     char *p2 = buf + strlen(buf) - 1;
26     printf("原字符串是：%s\n", buf);
27     inverse(p1, p2);
28     printf("字符串反轉後：%s\n", buf);
29     system("pause");
30     return 0;
31 }