Learning C++

// Program to check whether the given string is palindrome or not  using library functions#include<iostream.h>#include<string.h>int main(){ 	 char str[80],temp[80]; 	 cout<<"Enter string to check \n"; 	 cin>>str; 	 strcpy(temp,str); 	 strrev(temp); 	 if(strcmp(str,temp)==0) 		  cout<<"\n Given string is palindrome"; 	 else 		  cout<<"\n Given string is not palindrome"; 	 return 0;}

Test data 1

 

Enter string to check

madam

 

Output

Given string is palindrome

 

 

Test data 2

 

Enter string to check

master

 

Output

Given string is not palindrome

 

 

// program to check whether the string is palindrome or not

If not make it a palindrome by adding to its end

 

#include<iostream.h>

int main()

{

char str[80],temp[80];

int i=0,n=0,flag;

cout<<"Enter string to check \n ";

cin>>str;

while(str!='\')

{

++n;

++i;

}

 

for(i=0;i<n/2;i++)

{

if(str!=str[n-i-1])

{

flag=0;

break;

}

else flag =1;

}

 

if(flag==1)

cout<<"\n Given string is palindrome";

else

{

for(i=0;i<n-1;i++)

str[n+i]=str[n-i-2];

str[n+i]='\';

cout<<"\n Given string is converted to palindrome";

cout<<str;

}

return 0;

}

 

 

 

Test data 1

 

Enter string to check

madam

 

output

Given string is palindrome

 

Test data 2

 

Enter string to check

mouse

 

Output

Given string is converted to palindrome

mousesuom

 

// Program to find whether a given number is palindrome or not

If not make it palindrome by adding to its end

 

 

#include <iostream.h>

 

int main(void)

{

long n,i,j,sum=0;

cout<<"Enter any number \n";

cin>>n;

j=n;

while(j)

{

sum =sum*10+j%10;

j /=10;

}

 

if(sum==n)

cout<<"\n palindrome";

else

{

i=n;

n/=10;

while(n)

{

 

i= i*10+n%10;

n /=10;

}

cout<<"\n new palindrome"<<i;

}

return 0;

}

 

 

 

Test data 1

 

Enter any number

121

Output

palindrome

 

Test data 2

 

Enter any number

123

Output

new palindrome 12321

 

// Program to find the maximum sum of consecutive positive integers

 

#include <iostream.h>

#include<conio.h>

int main()

{

int a[50];

int i,n;

int sum=0,maxsum=0;

clrscr();

cout<<"Enter how many numbers \n";

cin>>n;

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

cin >> a;

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

{

 

if(a> 0)

sum = sum + a;

if(sum>maxsum)

maxsum=sum;

if(a<0)

sum=0;

}

cout<<maxsum;

return 0;

}

 

 

Test data

 

Enter how many numbers

12

-5 1 2 3 -7 4 6 -1 1 1 1 1

 

Output

10

 

// Program to sort given names

 

#include<iostream.h>

#include<string.h>

#include<conio.h>

 

int main()

{

char name[5][20],temp[20];

int i,j;

clrscr();

cout<<"Enter 5 names \n";

for(i=0;i<5;i++)

cin>>name;

for(i=0;i<4;i++)

{

for(j=i+1;j<5;j++)

{

if(strcmp(name,name[j])>0)

{

strcpy(temp,name);

strcpy(name,name[j]);

strcpy(name[j],temp);

}

}

}

cout<<"The sorted names are \n";

for(i=0;i<5;i++)

cout<<name<<"\n";

return 0 ;

}

 

 

Test data

 

 

Enter 5 names

java

oracle

cplusplus

perl

cobol

 

 

Output

 

The sorted names are

cobol

cplusplus

java

oracle

perl

 

// Program to convert binary to decimal

 

#include<iostream.h>

#include<math.h>

int main()

{

 

int m,i=0,sum=0,a[16],j,x=0;

long no;

 

cout<<"Enter Binary number:";

cin>>no;

while(no>0)

{

m=no%10;

a=m;

++i;

no=no/10;

}

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

{

 

sum=sum+a[j] * pow(2,x);

++x;

}

cout<<"\n Decimal number : "<<sum;

return 0 ;

 

}

 

 

Test data

 

Enter Binary number : 100011

 

Output

Decimal number : 35

 

// Example program for call by reference

 

 

#include<iostream.h>

void change(int &,int &);

int main()

{

int a,b;

cout<<"Enter values for a and b \n";

cin>>a>>b;

change(a,;

cout<<"\n The values of a and b after executing the function :";

cout<<a<<" "<<b;

return 0 ;

}

 

 

void change(int & c, int & d)

{

 

c=c*10;

d=d+8;

cout<<"The values of a and b inside the function :"<<c<<" "<<d;

}

 

 

Test data

 

Enter values for and b

2 3

The values of a and b inside the function : 20 11

The values of a and b after executing the function : 20 11

 

// Example program for call by value

 

 

#include<iostream.h>

void change(int,int);

int main()

{

int a,b;

cout<<"Enter values for a and b \n";

cin>>a>>b;

change(a,;

cout<<"\n The values of a and b after executing the function :";

cout<<a<<" "<<b;

return 0 ;

}

 

 

void change(int c, int d)

{

 

c=c*10;

d=d+8;

cout<<"\n The values of a and b inside the function : "<<c<<" "<<d;

}

 

 

Test data

 

Enter values for a and b

2 3

 

Output

The values of a and b inside the function : 20 11

The values of a and b after executing the function : 2 3

Please use the "code" and "/code" tags to delimit the portions of code inside your post.I did it for the first portion of code. Please look how I did it and do it the same way for the other portions of code mentionned in your post.I unlocked your post in order to allow you to perform this.RegardsYordan