What will be the output of the following C++ code after appending a character sequence?
#include <iostream>
#include <string>
using namespace std;
int main() {
string s = "abc";
s += "d";
cout << s.length();
return 0;
}
Options
-
A.
3
-
B.
4
-
C.
5
-
D.
More than one of the above
-
E.
None of the above
Correct Answer (Detailed Explanation is Below)
B.
4
Detailed Explanation
Correct Answer: Option B — 4Explanation: The += operator appends d to the string abc, producing abcd. The length() member function returns the number of characters, which is 4.
