1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
4 #define INIT_STACK_SIZE 100
5 typedef struct
6 {
7 char * chOperator;
8 int dwtop;
9 }OPND;
10
11 void InitStack(OPND *);
12 char Pop(OPND *);
13 void Push(OPND *,char );
14 char GetTop(OPND);
15 void printStack(OPND);
16
17 char stringBuffer[128] = {'\0'};
18 int main()
19 {
20 OPND opnd;
21 int length,flag = 0;
22 char ch,*pch;
23
24 InitStack(&opnd);
25 Push(&opnd,'#');
26
27 gets(stringBuffer);
28 pch = stringBuffer;
29
30 length = strlen(stringBuffer);
31 while(length -- )
32 {
33 ch = *pch++;
34 if((ch == '(') ||(ch == '[')) Push(&opnd,ch);
35 else if(ch == ')')
36 {
37 if(GetTop(opnd) == '(') Pop(&opnd);
38 else flag = 1;
39 }
40 else if(ch == ']')
41 {
42 if(GetTop(opnd) == '[') Pop(&opnd);
43 else flag = 1;
44 }
45 }
46 if(flag || (GetTop(opnd) != '#')) printf("Match false!\n");
47 else printf("Match succeed!\n");
48
49 return 0;
50 }
51 void InitStack(OPND *S)
52 {
53 S->chOperator = (char *)malloc(INIT_STACK_SIZE * sizeof(char));
54 if(!S->chOperator) exit(1);
55 S->dwtop = 0;
56 }
57 void Push(OPND *S,char ch)
58 {
59 *(S->chOperator + S->dwtop) = ch;
60 S->dwtop++;
61 }
62 char Pop(OPND *S)
63 {
64 S->dwtop--;
65 return *(S->chOperator + S->dwtop);
66 }
67 void printStack(OPND opnd)
68 {
69 while(opnd.dwtop){
70 opnd.dwtop--;
71 printf("%c",*(opnd.chOperator + opnd.dwtop));
72 }
73 }
74 char GetTop(OPND opnd)
75 {
76 return *(opnd.chOperator + opnd.dwtop -1);
77 }
