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C++ Programming- Arrays

Quiz by Sandhya

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10 questions
Show answers
  • Q1
    In C++, how do you declare an array named 'numbers' with 5 elements of type int?
    array numbers[5];
    numbers = int[5];
    int numbers[5];
    int[] numbers = new int[5];
    30s
  • Q2
    How do you access the fourth element in an array named 'scores' in C++?
    scores{4};
    scores[3];
    scores$4;
    scores(3);
    30s
  • Q3
    What is the syntax to assign the value 10 to the third element in an array named 'data' in C++?
    data[2] = 10;
    assign data[2] = 10;
    10 = data[2];
    data{2} = 10;
    30s
  • Q4
    How do you iterate through all elements of an array named 'ages' and print each element in C++?
    for(int i = 0; i < sizeof(ages) / sizeof(ages[0]); i++) { cout << ages[i] << ' '; }
    while(int i = 0; i < ages.length; i++) { cout << ages[i] << ' '; }
    for(int i = 1; i < sizeof(ages); i++) { cout << ages[i] << ' '; }
    foreach(int i in ages) { cout << i << ' '; }
    30s
  • Q5
    What is the correct way to declare a 2D array named 'matrix' with 3 rows and 4 columns in C++?
    int matrix = new int[3][4];
    int matrix(3, 4);
    int matrix[3][4];
    matrix = int[3][4];
    30s
  • Q6
    What is the syntax to access the value at row 1, column 2 in a 2D array named 'grid' in C++?
    grid{1, 2};
    grid(1, 2);
    grid$1$2;
    grid[1][2];
    30s
  • Q7
    What is the output of the following code snippet in C++? int numbers[] = {10, 20, 30, 40, 50}; cout << numbers[2];
    50
    40
    10
    30
    30s
  • Q8
    How do you find the number of elements in an array named 'myArray' in C++?
    length(myArray)
    sizeOfArray(myArray)
    countElements(myArray)
    sizeof(myArray) / sizeof(myArray[0])
    30s
  • Q9
    What is an array in C++?
    A function that calculates the sum of elements in a sequence.
    A type of loop used for iteration in C++.
    A standard input/output operation in C++.
    A collection of elements of the same data type stored in contiguous memory locations.
    30s
  • Q10
    How do you use a loop to initialize an array named 'scores' with values 1 to 10 in C++?
    while(scores <= 10) { scores[scores] = i; i++; }
    for(int i = 0; i < 10; i++) { scores[i] = i + 1; }
    for(int i = 1; i <= 10; i++) { scores[i-1] = i; }
    for(int i = 1; i < 11; i++) { scores[i] = i; }
    30s

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