include iostream using namespace std int main string str1 The laborato

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
#include <iostream>
using namespace std;
int main() {
string str1 = "The laboratory", str2 = "work", str3 = "№6", str4;
str4 = str1 + " " + str2 + " " + str3;
cout << "Result of merge str1, str2 and str3:" << endl << str4;
return 0;
}