57 - 60 PROGRAMS

/* *******************************************************

       57.To find the sum of the elements in an array using functions
   ******************************************************* */

#include<*stdio.h>
#include<*conio.h>
int sum(int);

void main()
{

int n,s;
 clrscr();
 printf("Enter the number of elements in the array\n");
 scanf("%d",&n);
 s=sum(n);
 printf("The sum of the elements in the array is %d",s);
 getch();
 }
int sum(int n)
{

int s=0,arr[20],i;
 printf("Enter the array elements");
 for(i=0;i
 scanf("%d",&arr[i]);

 for(i=0;i
  s=s+arr[i];
 return(s);
 }

OUTPUT
Enter the number of elements in the array
5
Enter the array elements 1 2 3 4 5
The sum of the elements in the array is 15

/* ***********************************************

        58.To find the transpose of a matrix using functions
   *********************************************** */

#include<*stdio.h>
#include<*conio.h>
void trans(int[3][3]);

void main()
{

int i,j,arr[3][3];
 clrscr();
 printf("Enter the elements to the array (3x3)\n");
 for(i=0;i<3;i++)
 {

for(j=0;j<3;j++)
  scanf("%d",&arr[i][j]);
  }
 trans(arr);

 getch();
 }
void trans(int ar[3][3])
{

int tra[3][3],i,j;
 for(i=0;i<3;i++)
 {

for(j=0;j<3;j++)
  tra[i][j]=ar[j][i];
  }
  printf("The transpose is\n");
  for(i=0;i<3;i++)
  {

for(j=0;j<3;j++)
   {

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

printf("\n\n");
  }
 }

OUTPUT
Enter the elements to the array (3x3)
1 2 3 4 5 6 7 8 9
The transpose is
1       4       7

2       5       8

3       6       9

/* **********************************************
           59.To find the length of a string using functions
   ********************************************* */

#include<*stdio.h>
#include<*conio.h>
int len(char[20]);

void main()
{

char s[20];
 int l;
 clrscr();
 printf("Enter the string\n");
 scanf("%s",&s);
 l=len(s);
 printf("The length of the string is %d",l);
 getch();
 }
int len(char st[20])
{

int i=0,l=0;

 while(st[i]!='\0')
  {

l++;
   i++;
   }
 return(l);
 }

OUTPUT
Enter the string
Successful
The length of the string is 10

/* *************************************************

          60.To find the factorial of a number using recursion
   ************************************************* */
#include<*stdio.h>
#include<*conio.h>

int fact(int);
void main()
{

int n,f;
 clrscr();
 printf("Enter the number whose factorial has to be found\n");
 scanf("%d",&n);
 f=fact(n);
 printf("The factorial of %d is %d ",n,f);

 getch();
 }

int fact(int n)
{

if(n==1)
 return(1);
 else
 return(n*fact(n-1));
 }

OUTPUT
Enter the number whose factorial has to be found
5
The factorial of 5 is 120