Array of Objects

Write a Program to create a class employee having data members - employee no. & salary, and display data of 5 employees using Array of Objects.

#include<iostream> using namespace std; class employee { int emp_no; int sal; public: void input() { cout<<"Enter Employee Number: "; cin>>emp_no; cout<<"Enter salary: "; cin>>sal; } void display() { cout<<"Employee No.= "<<emp_no<<"\t\t"; cout<<"Salary= "<<sal<<endl; } }; int main() { employee emp[5]; int i; for(i=0;i<5;i++) emp[i].input(); for(i=0;i<5;i++) emp[i].display(); return 0; }

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Area using Default Arguments

Write a Program to find Area of a Square & Rectangle using Default Arguments.

#include<iostream> using namespace std; int sqr(int x=10); int rect(int y=10,int z=20); int main() { int ch; cout<<"1.Area of square\n2.Area of rectangle\nEnter choice: "; cin>>ch; switch(ch) { case 1:cout<<"Area= "<<sqr()<<endl; break; case 2:cout<<"Area= "<<rect()<<endl; break; default:cout<<"Wrong choice."; } return 0; } int sqr(int a) { return a*a; } int rect(int a,int b) { return a*b; }

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Banking System using Class

Write a menu driven Program to implement a Banking System using class having data members - Account no., Name & Balance, & member functions - Input, Display, Deposit & Withdraw.

#include<iostream> using namespace std; class bank { public: int ac_no; char name[20]; float balance; void input(); void display(bank); int deposit(); int withdraw(); }; void bank::input() { cout<<"Enter Account No.: "; cin>>ac_no; cout<<"Enter Name: "; cin>>name; cout<<"Enter Balance: "; cin>>balance; } void bank::display(bank a) { cout<<"Account No.: "<<a.ac_no<<endl; cout<<"Name: "<<a.name<<endl; cout<<"Balance= "<<a.balance<<endl; } int bank::deposit() { int dep; cout<<"Enter Deposit Amount: "; cin>>dep; return dep; } int bank::withdraw() { int wtdr; cout<<"Enter Withdraw Amount: "; cin>>wtdr; return wtdr; } int main() { int ch; bank a; while(1) { cout<<"\n\t1.Input\n\t2.Display\n\t3.Deposit\n\t4.Withdraw\n\t5.Exit\nEnter Choice:" ; cin>>ch; switch(ch) { case 1: a.input(); break; case 2: a.display(a); break; case 3: a.balance+=a.deposit(); cout<<"Current Balance= "<<a.balance<<endl; break; case 4: a.balance-=a.withdraw(); cout<<"Current Balance= "<<a.balance<<endl; break; case 5: return 0; default: cout<<"Wrong Choice."<<endl; } } }

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Friend Funtion

Write a Program to find sum of two complex no.s using Friend Function.

#include<iostream> using namespace std; class complex_add { public: int x,y; void input() { cout<<"Enter the real & imaginary part of complex no.:"; cin>>x>>y; } friend void show(complex_add,complex_add,complex_add); }; void show(complex_add p,complex_add q,complex_add r) { cout<<"First complex no.:= "<<p.x<<"+i"<<p.y<<endl; cout<<"Second complex no.:= "<<q.x<<"+i"<<q.y<<endl; cout<<"Sum of complex no.:= "<<r.x<<"+i"<<r.y<<endl; } int main() { complex_add a,b,s; a.input(); b.input(); s.x=a.x+b.x; s.y=a.y+b.y; show(a,b,s); return 0; }

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Nesting of Member Funtions

Write a Program to find the smallest no. in an array using Nesting of Member Functions.

#include<iostream> using namespace std; class num { int i,small,a[5]; public: int smallest(int b[5]) { small=b[0]; for(i=0;i<5;i++) if(b[i]<small)small=b[i]; return small; } void input() { cout<<"Enter the array elements :"; for(i=0;i<5;i++) cin>>a[i]; } void display() { cout<<"The smallest no.= "<<small<<endl; } void call() { input(); smallest(a); display(); } }; int main() { num small; small.call(); return 0; }

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Sum of Time Objects

Write a Program to Create two time objects and find their sum using an object as a member function argument.

#include<iostream> using namespace std; class times { public: int hr,min; void input() { cout<<"Enter the time: "; cin>>hr>>min; } }; times add(times a,times b) { times sum; sum.hr=a.hr+b.hr; sum.min=a.min+b.min; return sum; } int main() { int hr_sum=0,min_sum=0; times t1,t2,sum; t1.input(); t2.input(); sum=add(t1,t2); if(sum.min>=60) { sum.hr+=1; sum.min-=60; } cout<<"Sum of Time = "<<sum.hr<<" : "<<sum.min<<endl; return 0; }

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For Dummies Books Series

For Dummies is an extensive series of instructional / reference books which are intended to present non-intimidating guides for readers new to the various topics covered. Despite the title, their publisher has taken great pains to emphasize that the For Dummies books are not literally for dummies. The subtitle for every book is, "A Reference for the Rest of Us!".

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