1)What is the difference between do while and while loop. 2) what is call by reference and call by value 3) explain pointer. 4) what is array. 5) difference between c c++ and java

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1) do while loop executes the code block at least once before checking the condition, while loop checks the condition before executing the code block. 2) Call by reference passes the address of the variable, call by value passes the value of the variable. 3) Pointer is a variable that stores the memory address of another variable. 4) Array is a data structure that stores a collection of elements of the same data type. 5) C is a procedural programming language, C++ is an object-oriented programming language, and Java is a high-level programming language with a strong emphasis on OOP.

do while loop: do { } while (condition);
while loop: while (condition) { }
Call by reference: void swap(int &a, int &b) { int temp = a; a = b; b = temp; }
Call by value: void swap(int a, int b) { int temp = a; a = b; b = temp; }
Pointer: int *ptr = &variable;
Array: int arr[5] = {1, 2, 3, 4, 5};
C vs C++ vs Java: C is procedural, C++ is OOP, Java is high-level with OOP features.

1)What is the difference between do while and while loop. 2) what is call by reference and call by value 3) explain pointer. 4) what is array. 5) difference between c c++ and java

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