Series Program 3

(1) + (1+2) + (1+2+3) + (1+2+3+4) + ... + (1+2+3+4+...+n)

int main()
{
    int i,j,n,sum=0;
    n=10;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=i;j++)
        {
            sum+=j;
        }
    }
    printf("Sum: %d",sum);
    return 0;
}

Series Program 2

(1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n)

int main()
{
    int i,n,sum=0;
    n=10;
    for(i=1;i<=n;i++)
    {
        sum+=i*i;
    }
    printf("Sum: %d",sum);
    return 0;
}

Series Program 1

1 + 2 + 3 + 4 + 5 + ... + n

int main()
{
    int i,n,sum=0;
    n=10;
    for(i=1;i<=n;i++)
    {
        sum+=i;
    }
    printf("Sum: %d",sum);
    return 0;
}

Alphabet Pattern - 12

AAAAA
BBBB
CCC
DD
E


#include <stdio.h>

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

    return 0;
} 




Alphabet Pattern - 11

EEEEE
DDDD
CCC
BB
A


#include <stdio.h>

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

    return 0;
}

Alphabet Pattern - 10

E
DD
CCC
BBBB
AAAAA


#include <stdio.h>

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

    return 0;
} 

Alphabet Pattern - 9

A
BB
CCC
DDDD
EEEEE


#include <stdio.h>

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

    return 0;
}