C语言：在字符串中删除与某字符相同的字符

用字符指针作函数参数编程实现如下功能：在字符串中删除与某字符相同的字符。
**输入格式要求："%s"  
输入提示信息：
"Input a string:"  
"Input a character:"
**输出格式要求："Results:%s
"
程序运行示例1如下：
Input a string:hello,world!
Input a character:o
Results:hell,wrld!

 1 #include <stdio.h>
 2 #include <string.h>
 3 #define N 100
 4 void  Squeeze(char *s, char c);
 5 int main()
 6 {
 7     char  str[20], ch;
 8     printf("Input a string:");
 9     gets(str);
10     printf("Input a character:");
11     ch = getchar();
12     Squeeze(str,ch);
13     printf("Results:%s
", str);
14     return 0;
15 }
16 void  Squeeze(char *s, char c)
17 {
18     int i,j,len;
19     len = strlen(s);
20     for (i = len; i>=0; i--)
21     {
22         if (s[i] == c)
23         {
24             for (j = i; j < len; j++)
25             {
26                 s[j] = s[j + 1];
27             }
28         }
29     }
30 }

做法一

 1 #include <stdio.h>
 2 #include <string.h>
 3 #define N 100
 4 void  Squeeze(char *s, char c);
 5 int main()
 6 {                      
 7     char  str[20], ch;
 8     printf("Input a string:");
 9     gets(str);
10     printf("Input a character:");
11     ch = getchar();
12     Squeeze(str, ch);
13     printf("Results:%s
", str);
14     return 0;
15 }                      
16 void  Squeeze(char *s, char c)
17 {                      
18     char str[N];
19     char *t = str;
20     strcpy(t, s);
21     for (; *t != ''; t++)
22     {                      
23         if (*t != c)
24         {                      
25             *s = *t;
26             s++;
27         }
28     }
29     *s = '';  /* 在字符串t2的末尾添加字符串结束标志 */
30 }

做法二