How to check a number palindrome or not in C

How to check a number palindrome or not in C

#include<stdio.h>

void main(){

    int n,r,sum=0,temp;

    printf("Please enter a number: ");

    scanf("%d",&n);

    temp=n;

    while(n){

         r=n%10;

         n=n/10;

         sum=sum*10+r;

    }

    if(temp==sum)

         printf("%d is a palindrome number",temp);

    else

         printf("%d is not a palindrome number",temp);

}

Read More

How to generate armstrong number with in a range

How to generate armstrong number with in a range

#include<stdio.h>

void main(){

    int num,r,sum,temp;

    int min,max;

    printf("Enter the left range: ");

    scanf("%d",&min);

    printf("Enter the right range: ");

    scanf("%d",&max);

    printf("Armstrong numbers in given range are: ");

    for(num=min;num<=max;num++)

   {

         temp=num;

         sum = 0;

         while(temp!=0){

             r=temp%10;

             temp=temp/10;

             sum=sum+(r*r*r);

         }

         if(sum==num)

             printf("%d ",num);

    }

}

Read More

How to generate perfect number with in a range

How to generate perfect number with in a range

#include<stdio.h>

void main(){

  int n,i,sum;

  int min,max;

  printf("Enter the left range: ");

  scanf("%d",&min);

  printf("Enter the right range: ");

  scanf("%d",&max);

  printf("Perfect numbers in given range is: ");

  for(n=min;n<=max;n++){

    i=1;

    sum = 0;

    while(i<n){

      if(n%i==0)

           sum=sum+i;

          i++;

    }

    if(sum==n)

      printf("%d ",n);

  }

}

Read More

How to Use Mouse in C language

How to Use Mouse in C language


 union REGS i,o;
 void initmos()
 {
i.x.ax=0;
int86(0x33,&i,&o);
 }
 void space(int size)
 {
int i;
int prevx,prevy;
prevx=wherex();
prevy=wherey();
gotoxy(prevx,prevy);
textattr(112);
for(i=1;i<=size;i++)
{
cprintf(" ");
}
gotoxy(prevx,prevy);
 }
 void showmos()
 {
i.x.ax=1;
int86(0x33,&i,&o);
 }
 void getmos(int *x,int *y,int *b)
 {
i.x.ax=3;
int86(0x33,&i,&o);
*b=o.x.bx;
*x=o.x.cx;
*y=o.x.dx;
 }

Read More

Encrypt and Decrypt folders and files using C language

Encrypt and Decrypt folders and files using C language


 #include<stdio.h>
 #include<conio.h>
 #include<string.h>
 void crypt(char arr1[],int ch)
 {
char arr2[9];
int len,stat;
len=strlen(arr1);
if(len<=7)
{
strcpy(arr2,arr1);
arr2[len]=255;
arr2[len+1]=NULL;
if(ch==1)
{
stat=rename(arr1,arr2);
}
if(ch==2)
{
stat=rename(arr2,arr1);
}
if(stat==0)
{
printf("Operation successfull");
}
else
{
printf("Procedure fail");
}
}
else
{
printf("\nEnter folder name less equal to 7");
}
 }
 void main()
 {
char arr1[9];
int ch;
clrscr();
printf("1.Encrypt\n2.Decrypt\n¯");
scanf("%d",&ch);
printf("Enter the old folder name:");
scanf("%s",arr1);
crypt(arr1,ch);
getch();
 }

Read More

Execute DOS commands in C language

This is the sample code for how to execute DOS commands in C language


#include<conio.h>
#include<stdio.h>
#include<process.h>
 void main()
 {
system("dir"); // use your desired command instead of "dir" command
getch();
 }

Read More

Caps Lock on and Off operation ( Assembly codes)

This is a sample code for hardware operations using C language

void main()
{
asm{
push ds
mov ax,40h
mov ds,ax
mov cl,[17h]
and cl,64
cmp cl,0
jnz l

mov cl,[17h]
or cl,64
mov [17h],cl
jmp end
  }
l:
asm{
mov cl,[17h]
and cl,191
mov [17h],cl
  }
end:
asm pop ds
}

Read More

Bubble sort using C laguage

#include<conio.h>
#include<stdio.h>
 void main()
 {
int arr[10],i,temp,j;
clrscr();
printf("Enter the numbers:");
for(i=0;i<=9;i++)
{
scanf("%d",&arr[i]);
}
for(i=0;i<=9;i++)
{
for(j=i+1;j<=9;j++)
{
if(arr[i]<arr[j])
{
temp=arr[i];
arr[i]=arr[j];
arr[j]=temp;
}
}
}
for(i=0;i<=9;i++)
{
printf("\n");
printf("  %d",arr[i]);
}
getch();
 }

Read More

Binary Search in C language

Binary Search in C language

#include<conio.h>
#include<stdio.h>
 void main()
 {
int arr[10]={34,56,12,345,2,65,89,34,5,12};
int i,j,temp;
int beg=0,end=9,mid,item;

clrscr();
for(i=0;i<10;i++)
{
for(j=0;j<10;j++)
{
if(arr[i]>arr[j])
{
temp=arr[i];
arr[i]=arr[j];
arr[j]=temp;
}
}
}
printf("\n");
for(i=0;i<10;i++)
{
printf(" %d",arr[i]);
}
printf("\nEnter number to find  ");
scanf("%d",&item);
while(beg<=end)
{
mid=int((end+beg)/2);
if(item==arr[mid])
{
printf("\nNumber is present\nLocation=%d",mid);
break;
}
else
{
if(arr[mid]>item)
{
beg=mid+1;
}
else
{
end=mid-1;
}
}
}
if(beg>end)
{
printf("\nNumber is not present....");
}
getch();
 }

Read More

Assembly language coding using C

This is a very simple code written in C language. You can read this program and can get help of, how to execute assembly codes in C compiler. This simple code will compare whether you have entered 1 or 2 or 3
#include<stdio.h>
#include<conio.h>
void main()
{
int n1,n2;
clrscr();
printf("Enter a number:");
scanf("%d %d",&n1);
asm mov ax,n1;

asm cmp ax,1;
asm jnz l1;
printf("1");
l1:
asm cmp ax,2;
asm jnz l2;
printf("2");
l2:
asm cmp ax,3;
asm jnz l3;
printf("3");
l3:
getch();
}

Read More