题目内容
A function can directly return at most one value to the calling function.
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The parentheses in a return statement “return (expression);” are not optional.
The data type of the expression in a return statement will be automatically converted to the data type declared in the function’s header line.
It is the compiler’s duty to make sure data types in function prototpyes and function header lines consistent.
A function stub does not need to be able to compile.
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