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Which of the following is true regarding arrays in C++?
- a)Arrays can dynamically resize during runtime.
- b)Arrays are always passed by reference to functions.
- c)Arrays can be easily modified without recompiling the program.
- d)Arrays have a fixed size once declared.
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is true regarding arrays in C++?a)Arrays can dy...
Fixed Size of Arrays in C++
Arrays in C++ have a fixed size once declared, meaning that the number of elements in an array is set at the time of its creation and cannot be changed during runtime. This fixed size is determined by the type of the array and the number of elements specified in the declaration.
Dynamic Resizing
Unlike some other data structures like vectors or lists, arrays in C++ cannot dynamically resize during runtime. If there is a need to store a variable number of elements or to resize an array, other data structures like vectors should be used instead.
Passing Arrays to Functions
Arrays in C++ are not passed by reference to functions by default. When passing an array to a function, a pointer to the first element of the array is actually passed. Changes made to the array within the function will affect the original array.
Modifying Arrays
Arrays in C++ can be modified, but the size of the array cannot be changed. Elements within the array can be updated or rearranged, but the total number of elements remains constant. If there is a need to modify the size of the array, a new array with the desired size must be created.
In conclusion, arrays in C++ have a fixed size once declared and cannot be dynamically resized during runtime. While arrays can be modified, their size remains constant, and other data structures should be used if dynamic resizing is required.
Arrays in C++ have a fixed size once declared, meaning that the number of elements in an array is set at the time of its creation and cannot be changed during runtime. This fixed size is determined by the type of the array and the number of elements specified in the declaration.
Dynamic Resizing
Unlike some other data structures like vectors or lists, arrays in C++ cannot dynamically resize during runtime. If there is a need to store a variable number of elements or to resize an array, other data structures like vectors should be used instead.
Passing Arrays to Functions
Arrays in C++ are not passed by reference to functions by default. When passing an array to a function, a pointer to the first element of the array is actually passed. Changes made to the array within the function will affect the original array.
Modifying Arrays
Arrays in C++ can be modified, but the size of the array cannot be changed. Elements within the array can be updated or rearranged, but the total number of elements remains constant. If there is a need to modify the size of the array, a new array with the desired size must be created.
In conclusion, arrays in C++ have a fixed size once declared and cannot be dynamically resized during runtime. While arrays can be modified, their size remains constant, and other data structures should be used if dynamic resizing is required.
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Which of the following is true regarding arrays in C++?a)Arrays can dy...
Arrays in C++ have a fixed size once declared. Their size cannot be changed dynamically during runtime.
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Which of the following is true regarding arrays in C++?a)Arrays can dynamically resize during runtime.b)Arrays are always passed by reference to functions.c)Arrays can be easily modified without recompiling the program.d)Arrays have a fixed size once declared.Correct answer is option 'D'. Can you explain this answer?
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