Q224
Which of the following is correct way of concatenating two string objects in C++? way 1: string s1 = "hello"; string s2 = "world"; string s3 = s1 + s2; way 2: string s1 = "hello"; string s2 = "world"; string s3 = s1.append(s2); way 3: string s1 = "hello"; string s2 = "world"; string s3 = strcat(s1,s2);
A.
1 and 2
AnswerB.
2 and 3
C.
1 and 3
D.
1, 2 and 3
Answer: Option A
Solution
Answer: Option A
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