Fisa De Lucru - Vectori
Fisa de lucru utila claselor a 10-a, neintensiv, pentru feedback la lectia vectori
Questions and Answers
- 1.
Care dintre variantele de mai jos reprezinta o declaratie corecta a unui vector cu 20 de elemente, numere reale ?
- A.
Int v[20];
- B.
Float v[10];
- C.
Double v[20];
- D.
Real v[15];
Correct Answer
C. Double v[20];Explanation
The correct answer is "double v[20];" because it declares a vector named "v" with 20 elements of type double, which are real numbers.Rate this question:
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- 2.
Fie declararea int vector[10]; care dintre urmatoarele operatii este incorecta ?
- A.
Vector[5]=6.7;
- B.
Vector=10;
- C.
Vector[6]=vector[9];
- D.
Vector[0]=10;
Correct Answer
B. Vector=10;Explanation
The correct answer is "vector=10;". This is incorrect because you cannot assign a single value to an entire array. The correct way to assign a value to an array is by specifying the index, as shown in the other options.Rate this question:
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- 3.
Fie urmatoarea secventa de program: ... int i; float a[20]; a[0]=1; for (i=1;i<=15;i=i+1) a[i]=a[i-1]+1; ... Ce se valoare s-ar afisa prin instructiunea: cout<<a[5];
- A.
6
- B.
5
- C.
4
- D.
S-ar afisa un mesaj de eroare
Correct Answer
A. 6Explanation
The given program initializes an array 'a' with 20 float elements and assigns the value 1 to the first element, a[0]. Then, it enters a for loop where it iterates from i=1 to i=15. In each iteration, it assigns the value of the previous element incremented by 1 to the current element. Therefore, a[5] would have a value of 6.Rate this question:
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- 4.
Fie secventa de program: ... int a[20],n.i,s; cin>>n; for(i=0;i<n;i++)
- A.
10
- B.
12
- C.
30
- D.
Nimic, executia ar genera un mesaj de eroare !
Correct Answer
B. 12Explanation
The given sequence of code declares an integer array "a" of size 20, and three integer variables "n", "i", and "s". It then takes input for the variable "n". The for loop iterates from 0 to "n-1". However, there is a syntax error in the code. The comparison operator used in the for loop condition should be "Rate this question:
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- 5.
Executia careia dintre urmatoarele instructiuni va genera un mesaj de eroare, stiind ca x este declarat astfel: float x[20] ?
- A.
Cin>>x;
- B.
X[10]=10;
- C.
X[0]=0.75;
- D.
If(x[4]
Correct Answer
A. Cin>>x;Explanation
The given code will generate an error because it is trying to input a value into an entire array using the cin statement. However, cin can only be used to input a single value, not an entire array. To input values into an array, a loop or individual assignments for each element of the array should be used.Rate this question:
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- 6.
Fie secventa urmatoare, scrisa in limbaj pseudocod: pentru i=1, 5, 1 executa v[i] = v[i]+1 scrie v[i] sfarsit pentru Rescrieti secventa in C++.
- 7.
Fie vectorul V=[ -1, 9, 4, 3, 0, 8, 2]. Daca vom sorta crescator aplicand metoda bulelor (interschimbare), cum va arata vectorul dupa a treia traversare ?
- 8.
Fie vectorul V=[ -1, 9, 4, 3, 0, 8, 2]. Daca vom sorta crescator aplicand metoda selectiei, cum va arata vectorul dupa a treia traversare ?
- 9.
Care dintre urmatoarele acceseaza corect primul element al unui vector din vectorul cu 100 de elemente f ?
- A.
F[1]
- B.
F[0]
- C.
F
- D.
F[first]
Correct Answer
B. F[0]Explanation
The correct answer is f[0]. In programming, the indexing of an array or vector starts from 0, so the first element of the vector f would be accessed using f[0].Rate this question:
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- 10.
Fie urmatoarea secventa de program: ... aux1=a[0]; aux2=a[1]; for(i=2;i<n;i++) a[i-2]=a[i]; a[n-2]=aux1; a[n-1]=aux2; for(i=2;i<n;i++) cout<<a[i]; ... Ce efect ar avea executia sa, daca vectorul a ar contine initial valorile: 3, 4, 2, 5, 3, 6, 8, 12 ?
- A.
S-ar afisa 3, 4, 2, 5, 3, 6, 8, 12
- B.
Nu s-ar executa
- C.
S-ar afisa 2, 5, 3, 6, 8, 12, 3, 4
- D.
S-ar afisa 2, 5, 3, 6, 8, 12, 4, 3
Correct Answer
C. S-ar afisa 2, 5, 3, 6, 8, 12, 3, 4Explanation
The given program performs a rotation operation on the array 'a'. It first stores the first two elements of the array in 'aux1' and 'aux2'. Then, it shifts the elements of the array to the left by 2 positions, starting from the third element. After that, it assigns the values of 'aux1' and 'aux2' to the last two positions of the array. Finally, it prints the elements of the array starting from the third position. Therefore, the program would output: 2, 5, 3, 6, 8, 12, 3, 4.Rate this question:
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Mar 19, 2023Quiz Edited by
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Mar 10, 2010Quiz Created by
Laurentiu_lambri
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