Computer Assignment New

8/3/2019 Computer Assignment New

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Program Number 9

Date : 16/2/12

Q9.) Write a C++ program that intakes two arguments : a character and an integer and prints the

character given number of times. If, however, the integer is missing the function prints the

character twice.

Source Code

#include<iostream.h>

#include<conio.h>

void print_char(char ch,int n=2)

{

for(int i=1;i<=n;i++)

{

cout<<"\n\t"<<ch;

}

}

void main()

{

clrscr();

int x=2;

char a;

cout<<"\n\tEnter a Character : ";cin>>a;

cout<<"\n\tEnter number ['x' to print the Charater 'x' times] : ";

cin>>x;

cout<<endl;

print_char(a,x);

getch();

}

OUTPUT





Program Number 8

Date : 16/2/12

Q8.) Write a function to take an int argument and return 0 if the given number is prime otherwise

return -l .

Source Code


#include<conio.h>

int prime_not(int number)

{

int x=0;

if(number==2||number==3)

x=0;

else

for(int i=2;i<=number/2;i++)

if(number%i==0)

{

x=-1;

break;

}

return (x);}

void main()

{

clrscr();

int a;

cout<<"\n\tEnter a Number : ";

cin>>a;

cout<<"\n\tIf Return Value is '0', then it is Prime.";

cout<<"\n\tOr if Return Value is '-1', then Number is not Prime.";

cout<<"\n\n\tReturn Value : "<<prime_not(a);

getch();

}



OUTPUT



Program Number 7

Date : 16/2/12

Q7.) Write a function to receive an int array, its size and a character '+' or '-'. By default, the

character should be '+', For the character '+', the function returns the sum of positive numbers

stored in the array and for the character '-'. the function returns the sum of negative numbers

stored in the array.

Source Code

#include<iostream.h>#include<conio.h>

int sum_pos_neg(int A[],int size,char ch='+'){

int total=0;if(ch=='+'){

for(int i=0;i<size;i++){

if(A[i]>0){

total+=A[i];}

}

}else if(ch=='-'){

for(int i=0;i<size;i++){

if(A[i]<0){

total+=A[i];}

}}return (total);

}void main(){

clrscr();int arr[100],n;char opt;cout<<"\n\tEnter Number of Elements : ";cin>>n;cout<<"\nEnter Elements Of Array : ";for(int i=0;i<n;i++){

cout<<"\nEnter "<<i+1<<" Element : ";

cin>>arr[i];}cout<<"\n\tEnter '+' for sum of all positive elements.";



cout<<"\n\tEnter '-' for sum of all negative elements.";cout<<"\n\tEnter Your Operation Choice : ";cin>>opt;if(opt=='-'||opt=='+')

cout<<"\n\tSum : "<<sum_pos_neg(arr,n,opt);else

cout<<"\n\tEnter a Valid Choice...";getch();

}



OUTPUT



Program Number 6

Date : 16/2/12

Q6.)Make a C++ program ‘power()’ which takes base and power as arguments and returns the result

as :

power (0, n) = 0, for each n

power (x, n) = xn, if x≠0 and n > 0

power (x, 0) = 1, for each x

Source Code


#include<conio.h>

long power(int x,int n)

{

long res=1;

if(x==0)

res=0;

else if(n==0)

res=1;

else if(n>0)

for(int i=0;i<n;i++)

res*=x;else

{

for(int j=0;j>-n;j--)

res*=x;

res=1/res;

}

return res;

}

void main()

{

clrscr();int base,exponent;

cout<<"\n\tEnter Value for Base : ";

cin>>base;

cout<<"\n\tEnter Power for Base : ";

cin>>exponent;

cout<<"\n\t"<<base<<"^"<<exponent<<" : "<<power(base,exponent);

getch();

}



OUTPUT





Program Number 5

Date : 16/2/12

Q5.) Write a complete C++ program that uses a function called carea( ) to calculate area of a circle.

The function carea( ) receives radius of float type & returns area of double type. The function main( )

gets a radius value from the user, calls carea( ), and displays the result. The function carea( ) is local

to main( ).

Source Code


#include<conio.h>double carea(float radius)

{

return (3.14*radius*radius);

}

void main()

{

clrscr();

float a;

cout<<"\n\tEnter Radius of Circle : ";

cin>>a;

cout<<"\n\tArea of Circle : "<<carea(a);

getch();

}



OUTPUT



Program Number 4

Date : 16/2/12

Q4.) Write a C++ program that uses a function smallo( ) (that is passed two int

argument by value)

to receive reference of the smaller value. Then using this reference the

smaller value is set to

0. Write a main ( ) function also to exercise this function.

Source Code


#include<conio.h>

void smallo(int a, int b)

{

if(a>b)

b=0;

else if(a<b)

a=0;

else

cout<<"\nBoth Numbers Are Equal";

cout<<"\nValue of First Number = "<<a;

cout<<"\nValue of Second Number = "<<b;}

void main()

{

clrscr();

int first,second;

cout<<"\nEnter First Number : ";

cin>>first;

cout<<"\nEnter Second Number : ";

cin>>second;

smallo(first,second);

getch();

}



OUTPUT



Program Number 3

Date : 16/2/12

Q3.) Write a C++ program that uses following functions :

(i) sqlarge() that is passed two int arguments by reference and then sets

the larger of the two numbers to its square.

(ii) sum() that is passed an int argument by value and that returns the

sum of the individual digits of the passed number.

(iii) main() that exercises above two functions by getting two integers from

the user and by

printing the sum of the individual digits of the square of the largernumber.

Source Code


#include<conio.h>

void sum(int a)

{

int n=a;

float rem=0,total=0;

while(n!=0)

{

rem=n%10;

total+=rem;

n=n/10;

}

cout<<"\n\n\tSum of Digits of the Square of Larger Number : "<<total;

}

void sqlarge(int a,int b){

int max=a;

if(a<b)

max=b;

int sqlarge=max*max;

cout<<"\n\tLarger Number : "<<max;

cout<<"\n\n\tSquare of Larger Number : "<<sqlarge;

sum(sqlarge);

}

void main()

{clrscr();





OUTPUT



Program Number 2

Date : 16/2/12

Q2) Write a C++ program to use the following function :

(iii) display( ) to display a matrix of a size m x n.

(ii) times2( ) to double each number of the matrix of size m x n.

(iii) maint() to read a matrix of size m x n and then to display original

matrix and then to display the new matrix formed by doubling its

elements.

Source Code


#include<conio.h>

void display(int A[10][10],int m,int n)

{

int i=0,j=0;

for(i=0;i<m;i++)

{

for(j=0;j<n;j++)

{

cout<<”\t”<<A[i][j];}

cout<<”\n\t”;

}

}

void times2(int A[10][10],int m,int n)

{

int i=0,j=0;

for(i=0;i<m;i++)

{

for(j=0;j<n;j++)

{

A[i][j]=2*A[i][j];

}

}

cout<<”\n\tDoubled Matrix : \n\n\t”;

display(A,m,n);

}

void main()

{

clrscr();

int i=0,j=0;int array[10][10],row,col;





OUTPUT



Program Number 1

Date : 16/1/12

Q14.) Write a program uses a function power( ) to raise a number m to power n.

The function takes int values for m and n and returns the result correctly. Use a

default value of 2 for n to make the function calculate squares when this

argument is omitted. Write a main( ) to get the value of m and n from the user

and to display the calculated result.

Source Code


#include<conio.h>

#include<math.h>

double power(float m,float n)

{

return (pow(m,n));

}

void main()

{

clrscr();

float base,exp=2;

cout<<"\nEnter Base Value : ";

cin>>base;

cout<<"\nEnter Exponential Value : ";

cin>>exp;

cout<<"\n\t"<<base<<"^"<<exp<<" : "<<power(base,exp);

getch();

}



OUTPUT

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