Convert Binary to Octal Number

Q)Write a C program to convert the BINARY NUMBER to OCTAL NUMBER

Sol)

#include<stdio.h>

int main( )

{

    long int binary_no, octal_no=0, j=1, rem;

   

    printf("Enter any Binary number: " ) ;

    scanf("%ld", &binary_no) ;

    while(binary_no!=0)

       {

              rem=binary_no%10 ;

              octal_no=octal_no+rem*j ;

              j=j*2;

              binary_no=binary_no/10 ;

       }

     printf("Equivalent octal value: %ld", octal_no) ;

     return 0;

}

Sum of diagonal elements in Matrix

Q)Write a C program to find the sum of diagonal elements in  matrix.
Hint: 
        1    2    3
        4    5    6
        7    8    9
First diagonal elements are 1,5,9
Second diagonal elements are 3,5,7.

Sol)
 

#include<stdio.h>
#include<conio.h>
#define MAX 5

int main()
{
    int mat[MAX][MAX],row,col ;
    int i,j,d1=0,d2=0 ;

    printf("Enter no. of rows and columns : ") ;
    scanf("%d%d",&row,&col) ;

    printf("Enter the elements of matrix: \n") ;
    if(row==col)
       {
             for(i=0; i<row; i++)
                   {
                         for(j=0; j<col; j++)
                                 scanf("%d",&mat[i][j]) ;
                     }
              for(i=0, j=col-1; i<row || j>=0; i++,j--)
                     {
                             d1=d1+mat[i][i] ;
                             d2=d2+mat[i][j] ;
                      }
            
               printf("\nThe sum of first diagonal elements : %d", d1) ;
               printf("\n The sum of second diagonal elements : %d", d2) ;
         }
     else
          {
                printf("Rows and Columns are not equal !!") ;
                printf("\n Try again !!") ;
           }

      getch();
      return 0;
}

                                    :::::OUTPUT::::

Enter no. of rows and columns : 3  2
Enter the elements of matrix:
Rows and Columns are not equal !!
Try again !!
  
Enter no of rows and columns : 3  3
Enter the elements of matrix:
1   2   3
4   5   6
7   8   9
The sum of first diagonal elements : 15
The sum of second diagonal elements : 15

Count the number of digits using while loop

Q) C program to count the number of digits in a number using while loop.

Sol)

#include<stdio.h>

int main()

{

    int num,count=0;

   printf("Enter a number : ") ;

   scanf("%d",&num);

   

   while(num)

      {

          num=num/10;

          count++ ;

       }

   

   printf("\nTotal digits is :  %d",count) ;

   return 0;

}

Subtraction of two matrices

Q)Write a C program for SUBTRACTION of two matrices.

Sol)

#include<conio.h>

#include<stdio.h>

int main()

{

   int a[3][3],b[3][3],c[3][3],i,j ;

   printf("Enter the first matrix->") ;

   for(i=0;i<3;i++)

      {

            for(j=0;j<3;j++)

               {

                    scanf("%d",&a[i][j]) ;

                }

        }

     printf("\nEnter the Second matrix->");

     for(i=0;i<3;i++)

       {

            for(j=0;j<3;j++)

               {

                    scanf("%d",&b[i][j]) ;

                }

        }

     for(i=0;i<3;i++)

         {

              for(j=0;j<3;j++) 

                  {

                       c[i][j]=a[i][j]-b[i][j] ;

                   }

          }

     printf("\nResultant matrix after Subtraction->\n ") ;

     for(i=0;i<3;i++)

      {    printf("\n");

            for(j=0;j<3;j++)

               {

                   printf("%d\t",c[i][j]) ;

                }

       }

    return 0; 

}

Addition of two matrices

Q) Write a C program for addition of two matrices using arrays.

#include<stdio.h>

#include<conio.h>

int main()

{

    int a[3][3],b[3][3],c[3][3],i,j ;

    printf("Enter the first matrix->") ;

    for(i=0;i<3;i++)

      {

            for(j=0;j<3;j++)

               {

                    scanf("%d",&a[i][j]) ;

                }

       }

    printf("\nEnter the second matrix->") ;

    for(i=0;i<3;i++)

      {

            for(j=0;j<3;j++)

               {

                    scanf("%d",&b[i][j]) ;

                }

       }

    

    for(i=0;i<3;i++)

       {

            for(j=0;j<3;j++)

               {

                  c[i][j]=a[i][j]+b[i][j] ;

                }

        }

     printf("\nThe addition of two matrix is -> \n ") ;

     for(i=0;i<3;i++)

       {    printf("\n") ;

             for(j=0;j<3j++)

                {

                     printf("%d\t",c[i][j]) ;

                 }

        }

      return 0;

}  

Print ASCII table

Q.) Write a C- program to print the ASCII table.

Sol)

#include<stdio.h>

int main()

{

    int i ; 

    for(i=0;i<=255;i++)

           {

                   printf("ASCII values of character %c: %d \n,i,i") ;

            }

    return 0 ;

 }

  Commonly used C programs :

1. Write a C program to find whether the number is PRIME number or not.

2.Write a C program to find whether the number is EVEN or ODD.

3.Write a C program to find the SIZE of the different data types.

4.Write a C program to find the MAX and MIN number.

5.Write a C program to find whether the number is ARMSTRONG number or not.

6.Write a C program to find whether the number is PERFECT number or not 

String concatenation without using strcat

Q.) Write a C-Program to concatenate the strings.

Sol)

#include<stdio.h>

#include<conio.h>

void strconcat(char[],char[])

int main()
{
     char str1[100],str2[100];
     int compare ;

     printf("Enter first String : ") ;
     scanf("%s",str1) ;

     printf("Enter second String : ") ;
     scanf("%s",str2) ;

     strconcat(str1,str2) ;

     printf("String after concatenation : %s",str1) ;

     return 0 ;
}

void strconcat(char str1[], char str2[])

{
    int i=0,j=0;

    while(str[i]!='\0')
                i++ ;


    while(str2[j]!='\0')
          {
                str1[i]=str2[j] ;
                i++; j++;
          }
     str1[i]='\0' ;
}     

PASCAL TRIANGLE USING C PROGRAM

Q.) Write a C program to print PASCAL Triangle without using array

                                                or

      Write a C program to print PASCAL Triangle using for loop.

Sol )

#include<stdio.h>

#include<conio.h>

long fact(int) ;

int main()

{

      int line,i,j ;

      printf("Enter the number of lines : ") ;

      scanf("%d",&line) ;

   

      for(i=0;i<line;i++)

          {

               for(j=0;j<line-i-1;j++)

                         printf("  ");

               for(j=0;j<=i;j++)

                         printf("%ld ",fact(i)/(fact(j))*fact(i-j))) ;

               printf("\n") ;

           }

       return 0;

}

long fact(int num)

{

          long f=1;

          int i=1;

          while(i<=num)

             {

                   f=f*i ;

                   i++ ;

              }

          return f;

}

                                :: SAMPLE OUTPUT ::

Enter the number of lines : 6

                           1

                       1       1

                     1    2    1

                  1    3    3   1

                1   4     6    4   1

              1  5  10    10   5  1

To print the FLOYD's TRIANGLE

Q.) Write a C-program to print Floyd's Triangle .

                               or

        How to print Floyd's Triangle in C.

Sol)

#include<stdio.h>

#include<conio.h>

int main()

{

   int i,j,r,k=1 ;

   

   printf("Enter the range : ") ;

   scanf("%d",&r) ;

   

   printf("FLOYD's TRIANGLE \n\n") ;

   for(i=1;i<=r;i++)

        {

            for(j=1;j<=i;j++,k++)

                       printf("%d",k) ;

             printf("\n") ;

         }

    return 0 ;

}  

Armstrong number or not

Q.) Write a C program to check whether the number is ARMSTRONG NUMBER or NOT .

Sol)

#include<stdio.h>

#include<conio.h>

int main()

{

    int num,r,sum=0,temp ;

    

    printf("Enter a number: ") ;
    scanf("%d",&num) ;

    

    temp=num ;

    while(num!=0)

         {

               r=num%10;

               num=num/10;

               sum=sum+(r*r*r) ;

          }

     if(sum==temp)

                 print("%d is an ARMSTRONG NUMBER",temp) ;

      else

                 printf("%d is not an ARMSTRONG NUMBER", temp) ;

      return 0 ;

  }