栈实现对称括号判断(c++)

#include
#include
using namespace std;
int main()
{	
	char c[100],c1[100],top=-1;
	cin>>c;
	for(int i=0;i<strlen(c);i++){
		if(c[i]=='('||c[i]=='['){
			c1[++top]=c[i];
		}else if(c[i]==')'&&c1[top]=='('){
			top--;
		}else if(c[i]==']'&&c1[top]=='['){
			top--;
		}else{
			cout<<"NO";
			return 0;
		}
	}
	if(top==-1){
		cout<<"YES";
	}else{
		cout<<"NO";
	}
	return 0;
}