The following diagram illustrates an int pointer variable, the dynamically ed memory unit it has requested, and a value stored in the memory unit. Р 15 owing space, write the code segment to first achieve the above effect and then rele 11
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Help please in C++ I dont understand
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- parameter list can also contain the data type of the output of function : true/false a function declared int addition (int a and b) is capable of returning one value back to the main loop : true/false main () is a void function: true / false the address returned by the reference pointer is always the same regardless of operating system: true/false a function declares as int addition (int a, int b) has a and b as output arguments : true/ falseReview these A reference is another name given to a variable in memory of the same data type A pointer is a variable that contains the address of another variable of the same type. Q1) The fun takes a reference and return a value int fun (int &x) { x=9; return x; } int main() { int x=4; int &z=x; int k=fun (z); cout<Choose if each of the following is true or false:Dynamically binding data to virtual functions is limited to pointers and references.Language: C Concatenate two strings using pointers and dynamically allocating the memory for the results. Read two strings from the keyboard using the fgets function. Dynamically allocate the memory for the result using malloc function. Using pointers, copy the first string to the result , except the null terminator ( ’\0’) from the end from the first string. Copy the second string to the result, including the null terminator. Print your results. Free up memory with the free function. Use valgrind to check memory usage.Q3. A pointer is a variable whose value is the address of another variable, i.e., direct address of the memory location. Given the C code and memory content mapping shown in Figure 4, complete the Table 2 after the program execution. #include ... Ox11223344 a int main() { int a = 2018, b = 2020; ... Ox12345678 int *ptr_a = &a, *ptr_b = &b; OX8899AABB ptr_a *ptr_a = a + 50; *ptr_b = *ptr_b - *ptr_a; OX89ABCDEF ptr_b ptr_b = ptr_a; ..... ... return 0; Figure 4. C code and memory content mapping. Table 2 Variable Value a) |b b) &ptr_a c) ptr_b d) *ptr_b6. Under what circumstances the compiler selects the function based on the contents of the pointer ptr, not on the type of the pointer & vice versa?QUESTION 2 Specify all that is true regarding the asterisk symbol for C++. The symbol is used for getting the memory address of a variable. The symbol is used for multiplication. O The symbol is use for dereferencing a pointer. O The * symbol is used for decalring a pointer.1. Given the codes below. Draw a memory layout of pointers and variable(i-ii). What is the output (iii)? int x = 11; int y = 20; int* ptr; i) ii) iii) ptr=&y; *ptr=*ptr + x; cout << x<<" "<The address operator O is a variable that holds an address all of these O returns the memory address of a variable dereferences a pointer and allows access to the value of the variable the pointer points toThe definition of a pointer variable is exactly the same as its name. What is the function of it? What does it imply exactly to have something called a "dynamic array"? What kind of connection exists between pointers and dynamic arrays?Addressing and Address Binding: Select all of the following statements that are true. Direct addressing means that the address to be accessed is located elsewhere. Relocatable code must be generated if the memory location to be used is not known at compile time. Relative addressing means that the address to be accessed is specified as a distance from a reference address. Absolute addressing means that the address to be accessed is specified completely and without other reference addresses. Address binding is not possible during execution time. The logical address space is bound to a separate physical address space.Match the following memory/pointer concepts and code structures: Leading asterisk, like *p pointer reference Trailing asterisk, like int* pointer variable data type Leading ampersand, like &a the thing pointed to by a poin v Trailing ampersand, like int& the memory location of a varia v Trailing star-ampersand, like int*& non-pointer referenceSEE MORE QUESTIONSRecommended textbooks for youC++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology PtrC++ Programming: From Problem Analysis to Program…Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage LearningC++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology PtrC++ Programming: From Problem Analysis to Program…Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning