There has been a continual debate on which programming language/s to learn, to use. As the latest TIOBE Programming Community Index for August 2021 indicates – C (13%), Python (12%), C++ (7%), Java (10%), and C#(5%) together control nearly half the programming activities worldwide. Further, C Programming Language Family (C, C++, C#, Objective C etc.) dominate more than 25% of activities. Hence, learning C++ is important as one learns about the entire family, about Object-Oriented Programming and gets a solid foundation to also migrate to Java and Python as needed. C++ is the mother of most general purpose of languages. It is multi-paradigm encompassing procedural, object-oriented, generic, and even functional programming. C++ has primarily been the systems language till C++03 which punches efficiency of the code with the efficacy of OOP. Then, why should I learn it if my primary focus is on applications? This is where the recent updates of C++, namely, C++11 and several later offer excellent depths and flexibility for C++ that no language can match. These extensions attempt to alleviate some of the long-standing shortcomings for C++ including porous resource management, error-prone pointer handling, expression semantics, and better readability. The present course builds up on the knowledge of C programming and basic data structure (array, list, stack, queue etc.) to create a strong familiarity with C++98 / C++03. Besides the constructs, syntax and semantics of C++ (over C), we also focus on various idioms of C++ and attempt to go to depth with every C++ feature justifying and illustrating them with several examples and assignment problems. On the way, we illustrate various OOP concepts. The course also covers important advances in C++ 11 and later released features..
Programming In Modern C++ Week 7 Programming Assignment.
INTENDED AUDIENCE : Any interested audience
PREREQUISITES : 10th standard/high school
INDUSTRY SUPPORT : Programming in C++ is so fundamental that all companies dealing with systems as well as application development (including web, IoT, embedded systems) have a need for the same. These include – Microsoft, Samsung, Xerox, Yahoo, Oracle, Google, IBM, TCS, Infosys, Amazon, Flipkart, etc. This course would help industry developers to be up-to-date with the advances in C++ so that they can remain at the state-of-the-art.
Course Layout
Programming Assignment Q1
#include <iostream>
using namespace std;
class IP1 {
int i;
public:
IP1(int ai) : i(ai) {}
int get() const { return i; }
void update() { i *= 10; }
};
class IP2 {
int i;
public:
IP2(int ai) : i(ai) {}
int get() const { return i; }
IP2(IP1& a) : i(a.get()) {} //LINE-1
operator IP1() { return IP1(i); } //LINE-2
void update() { i *= 20; }
};
int main() {
int i;
cin >> i;
IP1 a(i+2);
IP2 b(i);
const IP2 &r = static_cast<IP2>(a);
a.update();
cout << a.get() << ":";
cout << r.get() << ":";
const IP1 &s = static_cast<IP1>(b);
b.update();
cout << b.get() << ":";
cout << s.get() << ":";
return 0;
}
Programming Assignment Q2
#include<iostream>
using namespace std;
class myClassA{
int a = 5;
public:
void print(){
cout << a << " ";
}
};
class myClassB{
int b = 10;
public:
void print(){
cout << b;
}
myClassB operator=(int x){ //LINE-1
b = b * x;
}
};
void fun(const myClassA &t){
int x;
cin >> x;
myClassA &u = const_cast<myClassA&>(t); //LINE-2
u.print();
myClassB &v = reinterpret_cast<myClassB&>(u); //LINE-3
v = x;
v.print();
}
int main(){
myClassA t1;
fun(t1);
return 0;
}
Programming Assignment Q3
#include<iostream>
#include<cstring>
#include<malloc.h>
using namespace std;
class String{
char* _str;
public:
String (char* str) : _str(str){} //LINE-1
operator char *(){ //LINE-2
char* t_str = (char*)malloc(sizeof(_str) + 7);
strcpy(t_str, "Welcome ");
strcat(t_str, _str);
return t_str;
}
};
int main(){
char s[15];
cin >> s;
String st = static_cast<String>(s);
cout << static_cast<char*>(st);
return 0;
}