Repeated Number in Array

Repeated number in array:

Output:

 Enter the number in array 8
5
6
4
5
1
2
 8 5 6 4 5 1 2

 Repeated number is :: 5

Code:

#include<stdio.h>

int main()
{
int arr[20];
int arr2[20];
int n,count=0,i,j;
printf("\n Enter the number in array ");
for(i=0;i<=6;i++)
{ //input array elements
scanf("%d",&arr[i]);
}
for(i=0;i<=6;i++)
{ //print array elements
printf(" %d",arr[i]);
}
printf("\n Repeated number is :: ");
for(i=0;i<=6;i++)
{ //loop for checking the repeated elements
for(j=i+1;j<=6;j++)
{
if(arr[i] == arr[j])
{
printf("%d ",arr[i]);
}
}
}
}

To select prime number from array

To select prime number from array

Code:

// display prime number from array

#include<stdio.h>

int main()

{

int arr[20];

int n,i,j;

printf("\n Enter the values in array ");

for(i=0;i<=10;i++)

{

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

}

for(i=0;i<=10;i++)

{

printf("%d",arr[i]);

}

printf("\n PRIME NUMBERS IN ARRAY ARE :---");

for(i=0;i<=10;i++)

{

int flag = 0;

for(j=2;j<arr[i];j++)

{

if(arr[i]%j == 0)

{

flag = 1;

//printf("\n %d / %d",arr[i],j);

break;

}

}

if(flag == 0)

{

printf(" %d",arr[i]);

}

}
  }