C++ CODES PART#09

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USER DEFINE FUNCTION TO CALCULATE CUBE OF A

NUMBER#include<constream.h>

int cube(int);

void main()

{clrscr();

int x;

cout<<"\n enter any number:";

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CONTINUE…

cin>>x;

cout<<"\n cube of\t" <<x<< "\t is" <<"\t"<<cube(x);

getch();}

//user define function

int cube(int x)

{

return x*x*x;

}3

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OUTPUT…..

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Two different ways to write The same function

• Method1:

#include<constream.h>

int sum(void);

void main()

{clrscr();

int c;

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CONTINUE….

c=sum();

cout<<endl<<c;

getch();}

int sum(void){

int x=13,y=13;

return x+y;

}

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OUTPUT…..

7

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Method 2:

#include<constream.h>

int sum(void);

int sum(void){

int x=13,y=13;

return x+y;

}

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CONTINUE….

void main()

{clrscr();

int c;

c=sum();

cout<<endl<<c;

getch();}

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OUTPUT…

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Argument passing example

#include<constream.h>

void call(int x)

{cout<<x+8;

}

void main()

{clrscr();

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CONTINUE…

int x;

cin>>x;

call(x);

getch();}

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OUTPUT….

13

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Multiple argument passing

#include<constream.h>

void call(int x,int y)

{cout<<x+y;

}

void main()

{clrscr();

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CONTINUE….

int x,y;

cin>>x>>y;

call(x,y);

getch();}

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OUTPUT…

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Return function argument

#include<constream.h>

int fun(int x,float y)

{return x*y;

}

void main()

{clrscr();

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CONTINUE….

int a;

float b;

cin>>a>>b;

cout<<fun(a,b);

getch();}

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OUTPUT….

19

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Factorial program by function

#include<constream.h>

int fact(int a)

{int b,c=1;

for(b=a;b>=1;--b)

{c=c*b;}

return c; }

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CONTINUE…

void main()

{

clrscr();

int a;

cin>>a;

{cout<<fact(a);}

getch();}

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OUTPUT…

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Recursion

#include<constream.h>

int fact(int a){

if(a==1||a==0)

return 1;

else

return a*fact(a-1);}

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CONTINUE…

void main()

{clrscr();

int x;

cin>>x;

cout<<fact(x);

getch();}

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3 OF THE POSSIBLE OUTPUTS…

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Nested user define function

#include<constream.h>

int sumsqr(int,int);

int sum(int,int);

int sqr(int);

void main()

{clrscr();

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CONTINUE….

int x,y;

cout<<"\n enter any two numbers:";

cin>>x>>y;

cout<<"\nthe square of "<<x<<"is"<<sqr(x);

cout<<"\n the square of "<<y<<"is"<<sqr(y);

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CONTINUE…

cout<<"\n the sum of the squares is"<<sumsqr(x,y);

getch();

}

//udf sum of the squares

int sumsqr(int a,int b)

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CONTINUE…

{

return sum(sqr(a),sqr(b));}

//udf square of the numbers

int sqr(int c)

{return c*c;

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CONTINUE…

}

//udf square of the numbers

int sum(int d,int e)

{return d+e;

}

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OUTPUT…

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Function overloading

#include <constream.h>

// This program illustrate the use of Function overloading

int sqr(int x);

float sqr(float x);

double sqr(double x);

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CONTINUE…

void main(void)

{ // declare three variable of different types

clrscr();

int val1=4;

float val2=4.1;

double val3=4.123456;

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CONTINUE…

// get the data from the user and call each version of function

cout << "Square of 4 is " << sqr(val1) << "\n";

cout << "Square of 4.1 is " << sqr(val2) << "\n";

cout << "Square of 4.123456 is" << sqr(val3) << "\n";

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CONTINUE…

getch();

}

// now declare the three function versions

int sqr(int x) {

return(x*x);

}

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CONTINUE…

float sqr(float x) {

return(x*x);

}

double sqr(double x) {

return(x*x);

}

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OUTPUT……

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NICE WORDINGS

• Apnay dushman ko hazar mouqa do k woh tumara dost ban jaye. LEKIN apnay dost ko 1 bhi moqa na do k woh tumara dushman ban jaiy.

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