program to display all numbers which are stored in even positioned cell of array

using turbo C++
-----------------------------------------------------------------------
// program to display all numbers which are stored in even positioned cell of array
#include <stdio.h>
#include<conio.h>
void main()
{
    int a[100],n,i;
    printf("enter total number\n");
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        printf("enter number for location=%d\n",i);
        scanf("%d",&a[i]);
    }
    printf("numbers are:\n");
    for(i=0;i<n;i++)
    {
        if(i%2==0)
                {
                   printf("%d\n",a[i]);
                 }
    }
    getch();
}

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using online compiler/devC++/codeblocks with return concept
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// program to display all numbers which are stored in even positioned cell of array

#include <stdio.h>

int main()
{
    int a[100],n,i;
    printf("enter total number\n");
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        printf("enter number for location=%d\n",i);
        scanf("%d",&a[i]);
    }
    printf("numbers are:\n");
    for(i=0;i<n;i++)
    {
        if(i%2==0)
                {
                   printf("%d\n",a[i]);
                 }
    }
    return 0;
}

program to get sum of numbers among 'n' numbers

using turbo C++
-----------------------------------------------------------------------

// program to get sum of  numbers among 'n' numbers
#include <stdio.h>
#include<conio.h>
void main()
{
    int a[100],n,i,sum=0,number_to_be_summed;
    printf("enter total number\n");
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        printf("enter number for location=%d",i);
        scanf("%d",&a[i]);
    }
    printf("enter total number to be summed");
    scanf("%d",&number_to_be_summed);
    for(i=0;i<number_to_be_summed;i++)
    {
       
       sum=sum+a[i];
    }
    printf("sum=%d",sum);
    getch();
}

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using online compiler/devC++/codeblocks with return concept
---------------------------------------------------------------------------------------------------------------------
// program to get sum of  numbers among 'n' numbers

#include <stdio.h>

int main()
{
    int a[100],n,i,sum=0,number_to_be_summed;
    printf("enter total number\n");
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        printf("enter number for location=%d",i);
        scanf("%d",&a[i]);
    }
    printf("enter total number to be summed");
    scanf("%d",&number_to_be_summed);
    for(i=0;i<number_to_be_summed;i++)
    {
       
       sum=sum+a[i];
    }
    printf("sum=%d",sum);
    return 0;
}

C program to print the given star pattern S

/* C program to print the given star pattern
* * * * *

* * * * *

* * * * *

* * * * *

* * * * * * * * * * * * * * * * *

                                    * * * * *

                                    * * * * *

                                    * * * * *

                                    * * * * *
 */
#include<conio.h>
#include <stdio.h>
void main()
{
    int i,j,k,m;
    for(i=1;i<=5;i++)      //for number of rows. there are five rows so loop moves fives times
    {
       
        for(j=1;j<=5;j++) // for number of columns
        {
        printf("* ");
        }
        printf("\n");      // for next rows
    }
    for(i=1;i<=15;i++)      // for middle line (star;long line)
    {
        printf("* ");
    }
    printf("\n");
    for(i=1;i<=5;i++)      //for number of rows. there are five rows so loop moves fives times
    {
        for(m=1;m<=20;m++)   // for spaces. suppose there are 20 spaces.
        {
            printf(" ");
        }
        for(j=1;j<=5;j++) // for number of columns display. it is second part.
        {
        printf("* ");
        }
        printf("\n");      // for next rows
    }
   
getch();
}

C program to print the given star pattern * * * * *

/* C program to print the given star pattern
  * * * * *

            * * * * *

                       * * * * *

                                * * * * *
                                           * * * * *
                                * * * * *

                        * * * * *

            * * * * *
    * * * * *
 */
#include<conio.h>
#include <stdio.h>

void main()
{
    int i,j,k,m;
for(i=5;i>=1;i--)      //for number of rows. there are five rows so loop moves fives times
  {
    for(k=i;k<=7;k++)
      {
      printf(" ");   // this part is for space. every time , on display, it increases space.
      }
    for(j=1;j<=5;j++) //it displays star five times.It displays in columns
      {
        printf("* ");
      }
    printf("\n");
    }
    for(i=1;i<=4;i++)      //for number of rows. there are four rows so loop moves four times
    {
       
        for(k=i;k<=6;k++)
            {
            printf(" ");   // this part is for space. every time , on display, it decreases space.
            }
        for(j=1;j<=5;j++) //it displays star five times.It displays in columns
            {
            printf("* ");
            }m--;
        printf("\n");
    }
getch();
}

C program to print the given number pattern 121

/* C program to print the given number pattern 121
1
121
12321
1234321
123454321
 */
#include <stdio.h>
#include<conio.h>
void main()
{
    int i, j, N;

    printf("Enter rows: ");
    scanf("%d", &N);

    for(i=1; i<=N; i++)
    {
        // Prints the first part of the pattern
        for(j=1; j<=i; j++)
        {
            printf("%d", j);
        }
        // Prints the second part of the pattern
        for(j=i-1; j>=1; j--)
        {
            printf("%d", j);
        }
        printf("\n");
    }
    getch();
}
                                                                                   source:codeforwin.org

C program to print alphabetical character pattern A

/**
 C program to print alphabetical character pattern A
A
AB
ABC
ABCD
ABCDE
 */
#include <stdio.h>
#include<conio.h>
void main()
{

int i, j;
for (i=1;i<=5;i++)
{
for (j=0;j<i;j++) {
printf("%c", 'A'+ j);
}
printf("\n");
}
return 0;
}

C program to print alphabetical pattern ABCDE

/**
 C program to print alphabetical  pattern ABCDE
ABCDE
ABCD
ABC
AB
A
 */
#include <stdio.h>
#include<conio.h>
void main()
{

int i, j;
for (i=5;i>=1;i--) {
for (j=0;j<i;j++) {
printf("%c", 'A'+ j);
}
printf("\n");
}
getch();
}