Hard programs from the paper of Computer(5 programs)

Write program to check whether given string is palindrome or not:

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

  char st[20];

  int flag=0,i,l;

  clrscr();

  printf("enter any string\n");

  gets(st);

  l=strlen(st);

  for(i=0;i<l/2;i++)

     if(st[i]!=st[l-1-i])

     {

                flag=1;

                break;

     }

  if(flag==0)

    printf("String is Palindrom");

  else

    printf("String is not palindrom\n");

getch();

}

Write program to find sum of two matrix:

#include <stdio.h>

int main()

{

   int m, n, c, d, first[10][10], second[10][10], sum[10][10];

   printf("Enter the number of rows and columns of matrix\n");

   scanf("%d%d", &m, &n);

   printf("Enter the elements of first matrix\n");

   for ( c = 0 ; c < m ; c++ )

      for ( d = 0 ; d < n ; d++ )

         scanf("%d", &first[c][d]);

   printf("Enter the elements of second matrix\n");

   for ( c = 0 ; c < m ; c++ )

      for ( d = 0 ; d < n ; d++ )

            scanf("%d", &second[c][d]);

   for ( c = 0 ; c < m ; c++ )

      for ( d = 0 ; d < n ; d++ )

         sum[c][d] = first[c][d] + second[c][d];

   printf("Sum of entered matrices:-\n");

   for ( c = 0 ; c < m ; c++ )

   {

      for ( d = 0 ; d < n ; d++ )

         printf("%d\t", sum[c][d]);

      printf("\n");

   }

   return 0;

}

Write program to find prime number from given n numbers:

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,n,div,p;

 printf("Enter any number: ");

 scanf("%d", &num);

 for(n=2; n<=num; n++)

 {

  for(div=2; div<n; div++)

  {

   if(n%div==0)

   {

     p=0;

     break;

   }

   p=1;

  }

  if(p)

    printf("\t%d",n);

 }

 getch();

 return 0;

}

Write program to enter the details of student through structure:

#include<stdio.h>

#include<conio.h>

struct stud {

                char name[50];

                int roll_no;

                int marks[3];

                int total;

};

main()

{

                struct stud s[12];

                int i,j;

               

                printf("Enter the students details:\n");

                printf("In details enter the name,roll no,marks1,marks2,marks3\n");

               

                for(i=0;i<=2;i++)

                {

                                scanf("%s %d %d %d %d\n",&s[i].name,&s[i].roll_no,&s[i].marks[0],&s[i].marks[1],&s[i].marks[2]);

                }o 

                for(i=0;i<=2;i++)

                {

                                s[i].total=s[i].marks[0]+s[i].marks[1]+s[i].marks[2];

                }

                for(i=0;i<=2;i++)

                {

                                printf("name=%s\troll no=%d\tmarks1=%d\tmarks2=%d\tmarks3=%d\ttotal=%d\n",s[i].name,s[i].roll_no,s[i].marks[0],s[i].marks[1],s[i].marks[2],s[i].total);

                }

               

                getch();

}

 Write program to add numbers from 1 to K:

#include<stdio.h>

#include<conio.h>

void main()

{

                int k,i,sum=0;

                printf("Enter the number till you want your addition:");

                scanf("%d",&k);

                for(i=0;i<=k;i++)

                {

                                sum=sum+i;

                }

                printf("The addition of numbers is %d",sum);

                getch();

}

Be connected to my blog for more information about C language

Please comment if you have any query................