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PFC-quiz2 - thi trc nghim PFC Quiz2 slot 05(10 Ghi ch Nhng...

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Đ thi tr c nghi m PFC- Quiz2 - slot 05 (10') Ghi chú: Nh ng câu không ghi đi m đ c hi u là 1 đi m. ượ 1.01 (0.5 đi m) What is the correct value to return to the operating system upon the successful completion of a program? -1 1 0 đúng Programs do not return a value. 1.02. (0.5 đi m) What is the only function all C programs must contain? start() system() main() đúng program() 1.03. (0.5 đi m) Which of the following is a correct comment? */ Comments */ ** Comment ** { Comment } /* Comment */ đúng 1.04. Which of the following is not a correct variable type? float real đúng int double 1.05. (0.5 đi m) Which of the following is the correct operator to compare two variables? := = equal == đúng 1.06. Why can typecasting be dangerous?
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Some conversions are not defined, such as char to int. You might permanently change the value of the variable. You might temporarily lose part of the data - such as truncating a float when typecasting to an int.
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