#include <iostream>
#include <cstring>
using namespace std;
int main(){
    char str[100];
    int i,o_b,c_b;// o_b - opening bracket; c_b - closing bracket.
    cout << "Input string, please:" << endl;
    cin >> str[100];
    o_b=c_b=0;
    for (i=0;i <=strlen(str);i++){
        if (str[i] == '(') {
            o_b++;
        }
        if (str[i] == ')') {
            c_b++;
        }
    }
    if (o_b == c_b)
        cout << "the number of opening brackets and closing brackets are equal" << endl;
    else
        cout << "the number of opening brackets and closing brackets are not equal" << endl;
    system("pause");
    return 0;
}