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They are basically going through each character and reprinting it; however, whenever they come to a comma, they instead print a '\n', creating the new line.
cout << (c != ',' ? c : '\n') takes advantage of the ternary operator x ? y : z, which follows the process of validating x, and passing back y if it is true, or z if it is not. It basically rewrites "44,23,45" as "44\n23\45".
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They are basically going through each character and reprinting it; however, whenever they come to a comma, they instead print a
'\n', creating the new line.cout << (c != ',' ? c : '\n')takes advantage of the ternary operatorx ? y : z, which follows the process of validatingx, and passing backyif it is true, orzif it is not. It basically rewrites"44,23,45"as"44\n23\45".Read more on the Ternary Operator.