String interpolation in c++

#include <iostream> #include <string> using namespace std; int main () { //Declare three variables str1, str2, str3 string str1 = "Hello"; string str2 = "World"; string str3; int len ; // copy str1 into str3 str3 = str1; // concatenates str1 and str2 str3 = str1 + str2; return 0; }

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Source: petamind.com

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