hope this piece of code will help, welcome to c++
#include <iostream>
using namespace std;
int main()
{
char foo[3][3] = {{'a','b','c'}, {'d','e','f'},{'g','h','i'}};
string bar;
bar = "";
for(int i =0 ; i< 3;i++)
{
for(int j =0 ;j<3;j++)
{
bar += foo[i][j];
}
}
cout<< bar; //abcdefghi
return 0;
}
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