Sum the series:Sum=(x2)1+(x2)2+(x2)3+.......+(x2)n

Write a C program to Calculate the below Series. The Value of x and n must take from input terminal.
Sum=(x2)1+( x² )2+( x² )3 + ….  +  (x²)n 

 #include<stdio.h>
main()
{
    int i,n,x,c,r=1,sum=0;
    printf("Enter the value of X:");
    scanf("%d",&x);
    printf("\nEnter the value of range for series:");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        c=x*x;
        r*=c;
        sum+=r;
    }
    printf("\nThe sum is:");
    printf("%d\n",sum);
}

Pattern:1*5=5 2*5=10 3*5=15 4*5=20

Write a program to print          
           1*5=5
           2*5=10
           3*5=15
           4*5=20
           5*5=25 

#include<stdio.h>
main()
{
    int i=1,n,c=5;
    printf("\n\tEnter the range value:");
    scanf("%d",&n);
    printf("\nThe pattern is:\n");
        while(i<=n)
    {
       printf("%d * %d=%d\n",i,c,i*c);
       i++;
    }
}   

Pattern:1*1=1 2*2=4 3*3=9 4*4=16

Write a program to print
                        1*1=1      
                        2*2=4
                        3*3=9
                        4*4=16
                        5*5=25 

#include<stdio.h>
main()
{
    int i=1,n;
    printf("\n\tEnter the range value:");
    scanf("%d",&n);
    printf("\nThe pattern is:\n");
        while(i<=n)
    {
       printf("%d * %d=%d\n",i,i,i*i);
       i++;
    }
}

Pattern: 1 12 123 1234 12345

Write a program  to print 
                                          1
                                          12
                                          123
                                          1234
                                          12345 

#include<stdio.h>
main()
{
    int i,n,j;
    printf("\nEnter the range value:");
    scanf("%d",&n);
    printf("\nThe pattern is:\n");
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=i;j++)
        printf("%d",j);
        printf("\n");
    }
}

Array: Calculate average from a given array in C

Write a program in c which will calculate average of all values an array 

#include<stdio.h>
#include<conio.h>
main()
{
    int a[100],i,sum=0,average=0,n;
    printf("\n\tIT'S A PROGRAM TO CALCULATE AVERAGE FROM AN ARRAY\n");
    printf("\n\tEnter the array size: ");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
         printf("\nEnter the %d value: ",i);
        scanf("%d",&a[i]);
        sum+=a[i];
        average=sum/a[i];
    }
    printf("\n\tThe average is:");
        printf("%d\n",average);
}
 

Array: Sum of all values from an array in C

Write a program in c which will read and sum of all values an array 

#include<stdio.h>
#include<conio.h>
main()
{
    int a[100],i,n,sum=0;
    printf("\n\tIT'S A PROGRAM TO FRINT & SUM OF ALL VALUES AN ARRAY\n");
    printf("\n\tEnter the array size: ");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
         printf("\nEnter the %d value: ",i);
        scanf("%d",&a[i]);
        sum+=a[i];
    }
    printf("\n\tThe sum is %d:\n",sum);
}

Array: Print odd numbers from a given array in C

Write a program in c which will  print odd numbers from a given array 

 
 
#include<stdio.h>
#include<conio.h>
main()
{
    int a[100],i,n;
    printf("\n\tIT'S A PROGRAM TO FIND ODD NUMBERS FROM A GIVEN ARRAY\n");
    printf("\n\tEnter the array size: ");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        printf("\nEnter the %d value: ",i);
        scanf("%d",&a[i]);
    }
    {
      printf("\n\tThe odd numbers are: ");
      for(i=1;i<=n;i++)
         if(a[i]%2!=0)
          {
              printf("%d ",a[i]);
          }

    }
}

Array: Print even number from a given array in C

Write a program in c which will  print even numbers from a given array 

#include<stdio.h>
#include<conio.h>
main()
{
    int a[100],i,n;
    printf("\n\tIT'S A PROGRAM TO FIND EVEN NUMBERS FROM A GIVEN ARRAY\n");
    printf("\n\tEnter the array size: ");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        printf("\nEnter the %d value: ",i);
        scanf("%d",&a[i]);
    }
    {
      printf("\n\tThe even numbers are: ");
      for(i=1;i<=n;i++)
         if(a[i]%2==0)
          {
              printf("%d ",a[i]);
          }

    }
}