Đề thi trắc nghiệm lập trình C

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Nội dung Text: Đề thi trắc nghiệm lập trình C

BÀI THI TRẮC NGHIỆM ĐỀ SỐ: 501 1. What value is stored in x after the following two statements are executed: int x; x = 2 / 4 * 4 / 2; A 0 B 0.0625 C 1 D 1.0 2. Which of the following statements will correctly output the quote: Dan Quayle once said, "Who’s responsible for the riots? The rioters." A cout
B C D 4. Which snippet of code correctly adds the odd integers between 1 and 20? A B
C D 5. A B
C D 6. Which of the following is an invalid comment? A // Comment regarding the program B /* Comment regarding the program */ C /************************** D /************************** * Comment about the program **************************/ 7. What data types can be used to store numeric values with a decimal point, such as 3.14 ? A short, int B long C float, double
D char 8. A x = 1, y = 2 B x = 1, y = 1 C x = 0, y = 2 D x = 0, y = 1 9. What value is stored in variable x? int x; x = 2 * 3 + 4 * 5 -4 / 2; A 24 B 11 C 14 D 28
10. How can we input a value from the keyboard and store it in the variable named num? A cout > num; C cin using namespace std; B #include < stdlib.h> C #include < cstdlib> using namespace std; D #include < iostream> using namespace std; 12. Which of the following functions correctly returns the minimum of three integers passed in? A
B C D 13.
A 3223 B 3211 C 3212 D 3213 14.
A X =1 Y = 1 B X =1 Y = 2 C X =2 Y = 1 D X =2 Y = 2 15. Which of the following function prototypes is equivalent to the following prototype? int min(int num1, int num2, int num3); A int min(long num1, long num2, long num3); B int min(int, int, int); C int min(double num1, double num2, double num3); D long min(int, int, int);
16. A Before foo, X=1 In foo, X=1, After foo, X=1 B Before foo, X=1 In foo, X=2, After foo, X=2 C Before foo, X=2 In foo, X=2, After foo, X=2 D Before foo, X=1 In foo, X=2, After foo, X=1 17.
A 10 4 10 4 B 10 4 10 3 C 2 3 10 4 D 10 4 2 3 18.
A 10 4 10 4 B 2 3 10 4 C 10 4 10 3 D 10 4 2 3 19.
A X=3 Y=2 B X=3 Y=3 C X=2 Y=3 D X=2 Y=2 20. Given the following function prototype: void foo(int arr[]); Which statement correctly passes the array to the function? A int arr[10]; foo(arr);
B int arr[10]; foo(arr[]); C int arr[10]; foo(arr[0]); D int arr[10]; foo(arr[10]); 21. Which of the following correctly declares an array that holds exactly 10 integers? A int[10] arr; B int[11] arr; C int arr[11]; D int arr[10]; 22. A 321
B 121 C 311 D An error message 23. Which of the following is an invalid function prototype to accept a two- dimensional array of type double? A double foo(double arr[10][10]); B double foo(double arr[][10]); C double foo(double arr[10][100]); D double foo(double arr[][]); 24. A 12345
B 54321 C 52341 D 52345 25. A 311 B 321 C 123 D 121 26.
A int main(){ Foo f; f->printMessage(); return 0; } B int main(){ Foo f; f::printMessage(); return 0; } C int main() { Foo f; f.printMessage(); return 0; }
int main(){ D Foo f; printMessage(); return 0; } 27. What is the error in the following definition? class BankAccount{ public: int ID; double amount; } A There are no methods B There are no private variables C There is a missing semicolon after the right curly brace. D There are no public accessor methods. 28. Given the following declaration, how do we access the x and y members of the structure? struct Point { int x; int y; }; A Point p; p->x = 10; p->y = 20; B Point p; p::x = 10; p::y = 20; C Point p; p.x = 10;
p.y = 20; D Point p; p:x = 10; p:y = 20; 29. What is the error in the following definition? struct BankAccount{ int ID; double amount; } A "ID" cannot be all uppercase B The keyword "struct" should be "structure" C Different data types are not allowed in the struct. D There is a semicolon missing after the right curly brace 30. Under the principle of information hiding, which class definition best encapsulated the variable named "x"? A B
C D 31.