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How do you declare a string array and add elements to it in C plus plus?
Wiki User
∙ 14y ago
You cannot add elements to a fixed array in C or C++.
If, however, the array is declared as a pointer to an array, you can add elements by allocating a new array, copying/adding elements as needed, reassigning the new array to the pointer, and deallocating the original array.
Wiki User
∙ 14y ago
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What is the difference between a C plus plus string and a C-style string?
A std::string is an object that encapsulates an array of type char whereas a C-style string is a primitive array with no members. A std::string is guaranteed to be null-terminated but a C-style string is not.
Can you help me with the C plus plus code of the program which has 10 index of array it adds 5 into every even elements of the array and then it subtracts 10 into the odd elements of the array?
int array[10] = {...}; for (int i = 0; i < 10; ++i) { if (i % 2 == 0) array[i] += 5; else array[i] -= 10; }
What is the code in c plus plus to declare and define a structure keeping records of 10 students?
struct student { std::string id; std::string first_name; std::string last_name; // ... }; student students[10];
How arrays must be handled in c plus plus?
If the array is static it can declared in the structure itself: struct myArrayTag { int num[12]; // array of 12 integers (e.g., 48 bytes). } myArray; If it is dynamic then you must use a pointer and allocate the array outside the structure. You should also maintain a variable in the structure to keep track of how many elements the array currently has: struct myBufferTag { int * array; // Pointer to array of integers. int size; // Size of array (number of elements); } myBuffer;
How to write a code for finding sum of left diagonals elements in an array using c plus plus?
truzi i Ghal
How do you create an element in an array using C plus plus program?
If this is a homework related question, you really should consider trying to solve it yourself before looking at this answer. Otherwise, the value of the lesson, and the reinforcement provided by the assignment, will be lost to you. You do not create individual elements of arrays in C or C++. You create the array, and then reference the elements. Say you want to create a 10 x 20 array of floats. You would declare float MyFloatArray[10][20]. You would then reference the elements, such as MyFloatArray[3][8]. Note that 10 and 20 are the number of elements in each direction, but the valid range of indices is 0 to 9 and 0 to 19, respectively.
How you work character type data in array c plus plus?
It's not clear from the question what you mean by "work". However character data types (char and wchar_t) are intended to store character codes and they work exactly the same whether as a single variable or as an array of characters. If you want to use the array as a string, however, remember to include a null-terminator at the end of the string.
In C plus plus is it possible to instantiate an array without specifying a length?
No. You can declare a dynamic array without specifying a length, but in order to physically instantiate (either by using malloc or by using object-oriented construction) you must provide a length.
Why pointer is used to reference a string of characters write C plus plus statements that display the text hello using pointer to a string notation?
We use a pointer to reference a string because a string is an array of characters where every element is a char (or a wchar_t if using UNICODE strings). Passing arrays by value would require the entire array to be copied, but passing a pointer variable to an array only copies the pointer, which is effectively the same as passing the array by reference. #include <iostream> int main() { char * psz = "hello"; // pointer to a null-terminated string. std::cout << psz; // pass the pointer (by value) to the insertion operator. return( 0 ); }
What is the c plus plus command to read a line?
You can use cin which located in iostream.h You have to use certain data type to read string, for instance, array of char
Why can't the c plus plus compiler find the string object?
The most likely reason that the C++ compiler can't find the string object is just that you've forgotten to include the string header file.Code Example:#include // so you can use C++ strings using namespace std; // so you can write 'string' instead of 'std::string' string sMyString; // declare a string
What procedure or operator allows you to extract a single character from a string in c plus plus?
Use the array index operator. Strings are just arrays of characters so use the zero-based index of the character you are interested in. Alternatively, use pointer arithmetic to achieve the same thing. Note that the string's name is a reference to the start of the character array.
