Program in C for 2 12 22 32 series upto 10th term

/* Program for 2 12 22 32 series upto 10th term */
#include<stdio.h>
#include<conio.h>
void main()
{
    int a=2,i;
    i=1;
    do
    {
        printf(" %d ",a);
        a=a+10;
        i++;
    }
    while(i<=10);
    getch();
}

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Fibonacci Series in C Programming using Do While Loop

/* 3 3 6 9 15 fibonacci series upto 10th term */
#include<stdio.h>
#include<conio.h>
void main()
{
    int a=3,b=3,c,i;
    printf("\n %d",a);
    printf(" %d ",b);
    i=1;
    do
    {
        c=a+b;
        printf("%d ",c);
        a=b;
        b=c;
        i++;
    }
    while (i<=10);
    getch();
}

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Program in C for 5 25 125 625 series upto 10th term using Do while loop

/* 5 25 125 625 series upto 10th term */
#include<stdio.h>
#include<conio.h>
void main()
{
    int a=5,i;
    i=1;
    do
    {
        printf("%d ",a);
        a=a*5;
        i++;
    }
    while (i<=10);
    getch();
}

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Program in C for 1 4 9 16 series upto 20th term using Do- While Loop

/* 1 4 9 16 series upto 20th term */
#include<stdio.h>
#include<conio.h>
void main()
{
    int a,i;
    i=1;
    do
    {
        a=i*i;
        printf("%d ",a);
        i++;
    }
    while (i<=20);
    getch();
}

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Program in C for 1 5 9 series upto 10th term

/* 1 5 9 series upto 10th term */
#include<stdio.h>
#include<conio.h>
void main()
{
    int a=1,i;
    i=1;
    do
    {
        printf("%d ",a);
        a+=3;
        i++;
    }
    while (i<=10);
    getch();
}

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Program in C for Traingle : Nested Loop

#include<stdio.h>
#include<conio.h>
void main()
{
    int i,j;
    for(i=1;i<=5;i++)
    {
        for(j=1;j<=i;j++)
        {
            printf("%d",j);
        }
        printf("\n");
    }
    getch();
}

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Program in C to find the factorial of a given number

/* Program to find the factorial of a given number */
#include<stdio.h>
#include<conio.h>
void main()
{
    int i, num, fact = 1;

  printf("\n Enter a number to calculate it's factorial : ");
  scanf("%d", &num);

  for (i = 1; i <= num; i++)
    fact = fact * i;

  printf(" Factorial of %d = %d\n", num, fact);
  getch();
}

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