Question

Computer Science Midterm Exam Review Questions

5. What is a struct, and how do you declare one?

6. Define a struct and use it to solve a simple problem.

7. What is the main difference between structs in C and C++

Answer 1

1) Struct is a keyword ,it is used to declare structure type data. Structure datatype group the items ( different datatypes) ...(Struct is a collection of same/different data types)

Declaration of Struct

Struct Node {

Int Data

Char value

}; // here It groups the items type int,char

Assigning the datatype

Struct Node x; // x is Struct Node datatype

Accessing variables in Struct

x.Data ,x.value

2)

Simple example on Struct keyword

include<stdio.h>

#include<string.h>

struct Student

{

    char name[25];

    int age;

    char gender;

};

int main()

{

    struct Student s1;

    s1.age = 18;

    strcpy(s1.name, "Nick");

    strcpy(s1.name, "M");

    printf("Name of Student : %s\n", s1.name);

    printf("Age of Student : %d\n", s1.age);

    printf("Gender of the student %s\n",s1.gender);

    return 0;

}

3)

In C structure you can use only variables, you can't use member functions but in C++ you can add member functions to it

In C there is no topic of access specifier on structures but in C++ you can assign access specifiers(public, private,protect) to structures

In C you can directly initialize the variables but in C++ You can't directly initialize the variables