Fifth Chapter Lesson-17: Loop Control Statement Related programs.

At the end of this lesson-

1. You will be able to write a program for printing numbers from 1 to 10. Or
- You will be able to write a program for printing the 1 2 3 4 5 6 7 8 9 10 Sequence.
2. You will be able to write a program for printing numbers from 1 to n. Or
- You will be able to write a program for printing the 1 2 3 4 – – – – n Sequence.
3. You will be able to write a program for printing odd numbers from 1 to 10. Or
- You will be able to write a program for printing the 1 3 5 7 9 Sequence.
4. You will be able to write a program for printing odd numbers from 1 to n. Or
- You will be able to write a program for printing the 1 3 5 7- – – n Sequence.
5. You will be able to write a program for printing even numbers from 1 to 10. Or
- You will be able to write a program for printing the 2 4 6 8 10 Sequence.
6. You will be able to write a program for printing even numbers from 1 to n. Or
- You will be able to write a program for printing the 2 4 6 – – – n Sequence.
7. You will be able to write a program to calculate the sum of numbers from 1 to 100. Or
- You will be able to write a program to calculate the sum of the 1+2+3+ – – +100 series.
8. You will be able to write a program to calculate the sum of numbers from 1 to n. Or
- You will be able to write a program to calculate the sum of the 1+2+3+ – – +n series.
9. You will be able to write a program to calculate the sum of odd numbers from 1 to 100. Or
- You will be able to write a program to calculate the sum of the 1+3+5+ – – +100 series.
10. You will be able to write a program to calculate the sum of even numbers from 1 to 100. Or
- You will be able to write a program to calculate the sum of the 2+4+6+ – – +100 series.

আরো পড়ুন :: Sixth Chapter Lesson-5: Different SQL commands of database.

1. A program for printing numbers from 1 to 10. Or

A program for printing the 1 2 3 4 5 6 7 8 9 10 Sequence.

/* Program using for loop */ 
#include<stdio.h>
#include<conio.h>
main()
{
  int i;
  for(i=1; i<=10; i++)
  {
     printf("%d\t ",i);
  }
 getch();
}

/*Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
  int i;
  i=1;
  while(i<=10)
  {
    printf("%d\t ",i);
    i++;
  }
  getch();
}


/*Program using do while loop*/
#include<stdio.h>
#include<conio.h>
main()
{
  int i;
  i=1;
  do
  {
    printf("%d\t ",i);
    i++;
  } while(i<=10);
  getch();
}

2. A program for printing numbers from 1 to n. Or

A program for printing the 1 2 3 4 – – – – n Sequence.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i, n;
    printf("Enter value of n: ");
    scanf("%d",&n);
    for(i=1;i<=n; i=i+1)
    {
        printf("%d\t ",i);
    }
    getch();
}

/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
 int i, n;
 printf("Enter value of n: ");
 scanf("%d",&n);
 i=1;
 while(i<=n)
 {
 printf("%d\t ",i);
 i=i+1;
 }
 getch();
}

/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
 int i, n;
 printf("Enter value of n: ");
 scanf("%d",&n);
 i=1;
 do
 {
 printf("%d\t ",i);
 i=i+1;
 } while(i<=n);
 getch();
}

3. A program for printing odd numbers from 1 to 10. Or

A program for printing the 1 3 5 7 9 Sequence.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i;
    for(i=1;i<=10; i=i+2)
    {
        printf("%d\t ",i);
    }
    getch();
}



/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
 int i;
 i=1;
 while(i<=10)
 {
   printf("%d\t ",i);
   i=i+2;
 }
 getch();
}


/* Program using do while loop*/
#include<stdio.h>
#include<conio.h>
main()
{
 int i;
 i=1;
 do
 {
 printf("%d\t ",i);
 i=i+2;
 } while(i<=10);
 getch();
}

4. A program for printing odd numbers from 1 to n. Or

A program for printing the 1 3 5 7- – – n Sequence.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,n;
    printf("Enter Value of n: ");
    scanf("%d",&n);
    for(i=1;i<=n; i=i+2)
    {
        printf("%d\t ",i);
    }
    getch();
}



/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
 int i,n;
 printf("Enter Value of n: ");
 scanf("%d",&n);
 i=1;
 while(i<=10)
 {
   printf("%d\t ",i);
   i=i+2;
 }
 getch();
}


/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
 int i,n;
 printf("Enter Value of n: ");
 scanf("%d",&n);
 i=1;
 do
 {
 printf("%d\t ",i);
 i=i+2;
 } while(i<=10);
 getch();
}

5. A program for printing even numbers from 1 to 10. Or

A program for printing the 2 4 6 8 10 Sequence.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i;
    for(i=2;i<=10; i=i+2)
    {
        printf("%d\t ",i);
    }
    getch();
}


/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i;
    i=2;
    while(i<=10)
    {
        printf("%d\t ",i);
        i=i+2;
    }
    getch();
}


/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i;
    i=2;
    do
    {
        printf("%d\t ",i);
        i=i+2;
    } while(i<=10);
    getch();
}

আরো পড়ুন :: Second Chapter: Knowledge Based Questions & Answers.

6. A program for printing even numbers from 1 to n. Or

A program for printing the 2 4 6 – – – n Sequence.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,n;
    printf("Enter Value of n: ");
    scanf("%d",&n);
    for(i=2;i<=n; i=i+2)
    {
        printf("%d\t ",i);
    }
    getch();
}


/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,n;
    printf("Enter Value of n: ");
    scanf("%d",&n);
    i=2;
    while(i<=n)
    {
        printf("%d\t ",i);
        i=i+2;
    }
    getch();
}



/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,n;
    printf("Enter Value of n: ");
    scanf("%d",&n);
    i=2;
    do
    {
        printf("%d\t ",i);
        i=i+2;
    } while(i<=n);
    getch();
}

7. A program to calculate the sum of numbers from 1 to 100. Or

A program to calculate the sum of the 1+2+3+ – – +100 series.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,s=0;
    for(i=1;i<=100; i=i+1)
    {
        s=s+i;
    }
    printf("Sum=%d ",s);
    getch();
}



/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,s=0;
    i=1;
    while(i<=100)
    {
        s=s+i;
        i=i+1;
    }
    printf("Sum=%d ",s);
    getch();
}



/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,s=0;
    i=1;
    do
    {
        s=s+i;
        i=i+1;
    } while(i<=100);
    printf("Sum=%d ",s);
    getch();
}

8. A program to calculate the sum of numbers from 1 to n. Or

A program to calculate the sum of the 1+2+3+ – – +n series.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,n,s=0;
    printf("Enter Value of n: ");
    scanf("%d",&n);
    for(i=1;i<=n; i=i+1)
    {
        s=s+i;
    }
    printf("Sum=%d ",s);
    getch();
}



/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,n,s=0;
    printf("Enter Value of n: ");
    scanf("%d",&n);
    i=1;
    while(i<=n)
    {
        s=s+i;
        i=i+1;
    }
    printf("Sum=%d ",s);
    getch();
}



/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,n,s=0;
    printf("Enter Value of n: ");
    scanf("%d",&n);
    i=1;
    do
    {
        s=s+i;
        i=i+1;
    } while(i<=n);
    printf("Sum=%d ",s);
    getch();
}

9. A program to calculate the sum of odd numbers from 1 to 100. Or

A program to calculate the sum of the 1+3+5+ – – +100 series.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
int i,s=0;
for(i=1; i<=100; i=i+2)
{
    s=s+i;
}
printf("Sum=%d ",s);
getch();
}


/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
int i,s=0;
i=1;
while(i<=100)
{
    s=s+i;
    i=i+2;
}
printf("Sum=%d ",s);
getch();
}


/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
int i,s=0;
i=1;
do
{
    s=s+i;
    i=i+2;
} while(i<=100);
printf("Sum=%d ",s);
getch();
}

আরো পড়ুন :: NAND & NOR gates as Universal Gates

10. A program to calculate the sum of even numbers from 1 to 100. Or

A program to calculate the sum of the 2+4+6+ – – +100 series.

/* Program using for loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,s=0;
    for(i=2;i<=100; i=i+2)
    {
        s=s+i;
    }
    printf("Sum=%d ",s);
    getch();
}



/* Program using while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,s=0;
    i=2;
    while(i<=100)
    {
        s=s+i;
        i=i+2;
    }
    printf("Sum=%d ",s);
    getch();
}



/* Program using do while loop */
#include<stdio.h>
#include<conio.h>
main()
{
    int i,s=0;
    i=2;
    do
    {
        s=s+i;
        i=i+2;
    } while(i<=100);
    printf("Sum=%d ",s);
    getch();
}

11. Write a program to calculate factorial of a positive number.

#include <stdio.h>
main()
{
    int n, i;
    long int fact = 1;
    printf("Enter an integer: ");
    scanf("%d",&n);
    if(n<0)
        printf("Error! Factorial of a negative number doesn't exist.");
    else
    {
        for (i=1; i<=n; i++)
        {
            fact=fact * i;
        }
        printf("Factorial= %ld", fact);
    }
}

Practice

1. Write a program for printing the 5 9 13 17 – – -n series.
2. Write a program for printing the 1 4 9 16 25 – – -n series.
3. Write a program for printing the 1 8 27 64 – – -n series.
4. Write a program for printing the 1 4 27 256 – – -n series.
5. Write a program to calculate the sum of odd numbers from 1 to n. Or
- Write a program to calculate the sum of the 1+3+5+ – – +n series.
6. Write a program to calculate the sum of even numbers from 1 to n. Or
- Write a program to calculate the sum of the 2+4+6+ – – +n series.
7. Write a program to calculate the sum of the 1²+2²+3²+4²+- – -+ n² series.
8. Write a program to calculate the sum of the 1³+2³+3³+4³+- – -+ n³ series.
9. Write a program to calculate the sum of the 1¹+2²+3³+4⁴+ – – -+nⁿ series.

Lesson Evaluation-

Knowledge Based Questions:

Comprehension Based Questions:

Creative Questions:

Multiple Choice Questions:

Written by,

Mizanur Rahman (Mizan)
Lecturer of ICT, Shaheed Bir Uttam Lt. Anwar Girls’ College ,Dhaka Cantonment
Author at www.edupointbd.com
Software Engineer at mands IT
Former Lecturer of ICT, Cambrian College, Dhaka
Email: mizanjust@gmail.com
Cell: 01724351470

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