1 /*length 为字符串数组string的总容量*/
2 void ReplaceBlank(char stringp[],int length)
3 {
4 if(string==NULL &&length<=0)
5 return;
6
7 /*originalLength 为字符串string的实际长度*/
8 int originalLength=0;
9 int numberOfBlank=0;
10 int i=0;
11 while(string[i] !='\0')
12 {
13 ++originalLength;
14
15 if(string[i]==' ')
16 ++numberOfBlank;
17 ++i;
18 }
19
20 /*newlength 为把空格替换成%20之后的长度*/
21 int newLength=originalLength+numberOfBlank*2;
22 if(newLength >length)
23 return;
24
25 int indexOfOriginal = originalLength;
26 int indexOfNe = newLength;
27 while(indexOfOriginal >=0 && indexOfNew >indexOfOriginal)
28 {
29 if(string[indexOfOriginal] ==' ')
30 {
31 string[indexOfNew --] ='0';
32 string[indexOfNew --] ='2';
33 string[indexOfNew --] ='%';
34 }
35 else
36 {
37 string[indexOfNew --]=string[indexOfOriginal];
38 }
39
40 --indexOfOriginal;
41 }
42 }
