What will be the output of the given C++ code that attempts to concatenate character arrays using the + operator?
Asked In:
BPSC TRE 1.0
#include <iostream>
#include <string>
using namespace std;
int main() {
char s1[6] = "Hello";
char s2[6] = "World";
char s3[12] = s1 + " " + s2;
cout << s3;
return 0;
}
Options
-
A.
Hello
-
B.
World
-
C.
Error
-
D.
More than one of the above
-
E.
None of the above
Correct Answer (Detailed Explanation is Below)
C.
Error
Detailed Explanation
Correct Answer: Option C — ErrorExplanation: C-style character arrays cannot be concatenated using the + operator. The expression s1 + " " + s2 is invalid because s1 is a character array that decays to a pointer, and pointer arithmetic cannot concatenate strings. Use std::string objects with +, or use appropriate C-string functions. In valid C++ source code, string literals must use straight quotation marks.
