#include<stdio.h>#include<iostream>#define StringSize 20using namespace std;bool syntaxCheck(const char* s);bool syntaxCheck(const char* s){	int j=0;	char* stack;	stack=new char[strlen(s)+1];	for(;*s;s++)	{		char ch=*s;		switch(ch)		{			case '{' :				stack[j++]=ch;				break;			case '[' :				stack[j++]=ch;				break;			case '(' :				stack[j++]=ch;				break;			case '}' :				if(j==0||stack[--j]!='{')					return false;				break;			case ']' :				if(j==0||stack[--j]!='[')					return false;				break;			case ')' :				if(j==0||stack[--j]!='(')					return false;				break;		}	}	if(j==0)		return true;	else		return false;}int main(void){	char string[StringSize];	printf("Please input a String of C language,include '{','}','(',')','[',']':\n");	cin.getline(string,StringSize);	if(syntaxCheck(string))		cout<<"true!"<<endl;	else		cout<<"false!"<<endl;	return 0;}