C language C51 statements for single chip microcomputers-EEWORLD

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(1) return;

(2) return (expression);

If the return statement is followed by an expression, the value of the expression is calculated and used as the return value of the function. If there is no expression, an indeterminate value will be returned when the function returns. Usually we use the return statement to return the value obtained by the calling function to the main calling function.

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