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How do you concatenate two strings s1 and s2 in C++?s1 + s2s1.append(s2)strcat(s1, s2)Both a) and b)

Question

How do you concatenate two strings s1 and s2 in C++?s1 + s2s1.append(s2)strcat(s1, s2)Both a) and b)

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Solution

To concatenate two strings s1 and s2 in C++, you can use the '+' operator or the 'append()' function. Here are the steps:

  1. Using the '+' operator:
string s1 = "Hello";
string s2 = " World";
string s3 = s1 + s2; // s3 is now "Hello World"
  1. Using the 'append()' function:
string s1 = "Hello";
string s2 = " World";
s1.append(s2); // s1 is now "Hello World"

Please note that the 'strcat()' function is used in C and not in C++. It requires character arrays, not std::string objects.

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