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#include <iostream>using namespace std;string convertString(string& str){int length = str.length();for (int i = 0; i < length; i++){if (str[i] >= 'a' && str[i] <= 'z'){str[i] = str[i] - 32;}else if (str[i] >= 'A' && str[i] <= 'Z'){str[i] = str[i] + 32;}}return str;}int main(){string str1 = "ABraCAdaBRa";     cout << "Original String 1:" << endl;     cout << str1 << endl;str1 = convertString(str1);      cout << "Converted String 1:" << endl;      cout << str1 << endl;return 0;}