Complete Educational Tutorial Note of C Programming for beginners [Start coding from zero level]

1. WAP to Print Hello World

#include <stdio.h>

#include <conio.h>

void main()

{

    printf(“Hello World”);

    getch();

}

2. WAP to Add Two Numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int a=5, b=10, c;

    c = a + b;

    printf(“Sum = %d”, c);

    getch();

}

3. WAP to Print Sum of two inputted Numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int a, b, c;

    scanf(“%d%d”, &a, &b);

    c = a + b;

    printf(“Sum = %d”, c);

    getch();

}

4. WAP to find area of circle

#include <stdio.h>

#include <conio.h>

void main()

{

    float r, area;

    scanf(“%f”, &r);

    area = 3.14 * r * r;

    printf(“Area = %f”, area);

    getch();

}

5. WAP to print simple interest

#include <stdio.h>

#include <conio.h>

void main()

{

    float p, t, r, si;

    scanf(“%d%d%d”, &p, &t, &r);

    si = (p * t * r) / 100;

    printf(“Simple Interest = %f”, si);

    getch();

}

6. WAP to Convert Nepali Rupees to Indian Currency

#include <stdio.h>

#include <conio.h>

void main()

{

    float npr, inr;

    scanf(“%f”, &npr);

    inr = npr / 1.6;

    printf(“Indian Rupees = %f”, inr);

    getch();

}

7. WAP to Convert Fahrenheit to Celsius

#include <stdio.h>

#include <conio.h>

void main()

{

    float f, c;

    scanf(“%f”, &f);

    c = (f – 32) * 5 / 9;

    printf(“Celsius = %f”, c);

    getch();

}

8. WAP to find Greatest among two numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int a, b;

    scanf(“%d%d”, &a, &b);

    if(a > b)

        printf(“Greatest = %d”, a);

    else

        printf(“Greatest = %d”, b);

    getch();

}

9. WAP to  find Greatest among three numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int a, b, c;

    scanf(“%d%d%d”, &a, &b, &c);

    if(a > b && a > c)

        printf(“Greatest = %d”, a);

    else if(b > c)

        printf(“Greatest = %d”, b);

    else

        printf(“Greatest = %d”, c);

    getch();

}

10. WAP to  Check Odd or Even

#include <stdio.h>

#include <conio.h>

void main()

{

    int n;

    scanf(“%d”, &n);

    if(n % 2 == 0)

        printf(“Even”);

    else

        printf(“Odd”);

    getch();

}

11. WAP to Check Voting eligibility

#include <stdio.h>

#include <conio.h>

void main()

{

    int age;

    scanf(“%d”, &age);

    if(age >= 18)

        printf(“Eligible for voting”);

    else

        printf(“Not eligible”);

    getch();

}

12. WAP to find inputed number is Divisible by 5 or not

#include <stdio.h>

#include <conio.h>

void main()

{

    int n;

    scanf(“%d”, &n);

    if(n % 5 == 0)

        printf(“Divisible by 5”);

    else

        printf(“Not divisible by 5”);

    getch();

}

13. WAP to Check inputed number is  Zero or Not

#include <stdio.h>

#include <conio.h>

void main()

{

    int n;

    scanf(“%d”, &n);

    if(n == 0)

        printf(“Zero”);

    else

        printf(“Not Zero”);

    getch();

}

14. WAP to Print 10 Natural Numbers and Sum (for loop)

#include <stdio.h>

#include <conio.h>

void main()

{

    int i, sum = 0;

    for(i = 1; i <= 10; i++)

    {

        printf(“%d “, i);

        sum += i;

    }

    printf(“\nSum = %d”, sum);

    getch();

}

15. WAP to Print 10 Odd Numbers (do-while)

#include <stdio.h>

#include <conio.h>

void main()

{

    int i = 1, count = 0;

    do

    {

        printf(“%d “, i);

        i += 2;

        count++;

    } while(count < 10);

    getch();

}

16. WAP to Print 10 Even Numbers (while)

#include <stdio.h>

#include <conio.h>

void main()

{

    int i = 2, count = 0;

    while(count < 10)

    {

        printf(“%d “, i);

        i += 2;

        count++;

    }

    getch();

}

17. WAP to find Sum of 10 inputted numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int i, n, sum = 0;

    for(i = 1; i <= 10; i++)

    {

        scanf(“%d”, &n);

        sum += n;

    }

    printf(“Sum = %d”, sum);

    getch();

}

18. WAP to find Factorial of a number

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, i, fact = 1;

    scanf(“%d”, &n);

    for(i = 1; i <= n; i++)

        fact = fact*i;

    printf(“Factorial = %d”, fact);

    getch();

}

19. WAP for Multiplication table

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, i;

    scanf(“%d”, &n);

    for(i = 1; i <= 10; i++)

        printf(“%d x %d = %d\n”, n, i, n*i);

    getch();

}

20. WAP to find Fibonacci Series (10 terms)

#include <stdio.h>

#include <conio.h>

void main()

{

    int a=1, b=2, c, i;

    printf(“%d %d “, a, b);

    for(i = 3; i <= 10; i++)

    {

        c = a + b;

        printf(“%d “, c);

        a = b;

        b = c;

    }

    getch();

}

 

21. WAP to check whether number is Prime or Composite

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, i, count = 0;

    scanf(“%d”, &n);

    for(i = 1; i <= n; i++)

    {

        if(n % i == 0)

            count++;

    }

    if(count == 2)

        printf(“Prime Number”);

    else

        printf(“Composite Number”);

    getch();

}

22. WAP to find Prime Numbers between 1 to 100

#include <stdio.h>

#include <conio.h>

void main()

{

    int i, j, count;

    for(i = 1; i <= 100; i++)

    {

        count = 0;

        for(j = 1; j <= i; j++)

        {

            if(i % j == 0)

                count++;

        }

        if(count == 2)

            printf(“%d “, i);

    }

    getch();

}

23. WAP to find First 15 Prime Numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int n = 2, count, i, found = 0;

    while(found < 15)

    {

        count = 0;

        for(i = 1; i <= n; i++)

        {

            if(n % i == 0)

                count++;

        }

        if(count == 2)

        {

            printf(“%d “, n);

            found++;

        }

        n++;

    }

    getch();

}

24. WAP to find Quotient and Remainder

#include <stdio.h>

#include <conio.h>

void main()

{

    int a, b;

    scanf(“%d%d”, &a, &b);

    printf(“Quotient = %d\n”, a / b);

    printf(“Remainder = %d”, a % b);

    getch();

}

25. WAP to count total digits in a number

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, count = 0;

    scanf(“%d”, &n);

    while(n != 0)

    {

        n = n / 10;

        count++;

    }

    printf(“Total digits = %d”, count);

    getch();

}

26. WAP to print sum of digits

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, sum = 0,r;

    scanf(“%d”, &n);

    while(n != 0)

    {

        r = n % 10;

        sum = sum + r;

        n = n / 10;

    }

    printf(“Sum of digits = %d”, sum);

    getch();

}

27. WAP to print reverse of digits

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, rev = 0,r;

    scanf(“%d”, &n);

    while(n != 0)

    {

        r = n % 10;

        rev = rev * 10 + r;

        n = n / 10;

    }

    printf(“Reverse = %d”, rev);

    getch();

}

28. WAP to check Palindrome number

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, temp, rev = 0;

    scanf(“%d”, &n);

    temp = n;

    while(n != 0)

    {

        r = n % 10;

        rev = rev * 10 + r;

        n = n / 10;

    }

    if(temp == rev)

        printf(“Palindrome”);

    else

        printf(“Not Palindrome”);

    getch();

}

29. WAP to check Armstrong number

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, temp, sum = 0, r;

    scanf(“%d”, &n);

    temp = n;

    while(n != 0)

    {

        r = n % 10;

        sum = sum +  r * r * r;

        n = n / 10;

    }

    if(temp == sum)

        printf(“Armstrong Number”);

    else

        printf(“Not Armstrong”);

    getch();

}

30. WAP to print First 10 Palindrome Numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int n = 1, rev, temp, count = 0;

    while(count < 10)

    {

        temp = n;

        rev = 0;

        while(temp != 0)

        {

            r = temp % 10;

            rev = rev * 10 + r;

            temp = temp / 10;

        }

        if(rev == n)

        {

            printf(“%d “, n);

            count++;

        }

        n++;

    }

    getch();

}

31. WAP to print Palindrome Numbers between 100 to 500

#include <stdio.h>

#include <conio.h>

void main()

{

    int n, temp, rev;

    for(n = 100; n <= 500; n++)

    {

        temp = n;

        rev = 0;

        while(temp != 0)

        {

            r = temp % 10;

            rev = rev * 10 + r;

            temp = temp / 10;

        }

        if(rev == n)

            printf(“%d “, n);

    }

    getch();

}

32. WAP to find HCF and LCM of two numbers

#include <stdio.h>

#include <conio.h>

void main()

{

    int a, b, i, hcf, lcm;

    scanf(“%d%d”, &a, &b);

    for(i = 1; i <= a && i <= b; i++)

    {

        if(a % i == 0 && b % i == 0)

            hcf = i;

    }

    lcm = (a * b) / hcf;

    printf(“HCF = %d\nLCM = %d”, hcf, lcm);

    getch();

}

33. WAP to find HCF and LCM using Built-in Function

#include <stdio.h>

#include <conio.h>

#include <math.h>

void main()

{

    int a, b, hcf, lcm;

    scanf(“%d%d”, &a, &b);

    hcf = __gcd(a, b);

    lcm = (a * b) / hcf;

    printf(“HCF = %d\nLCM = %d”, hcf, lcm);

    getch();

}

 

SERIES PROGRAMS

1. i) 5, 10, 15, … 50

#include <stdio.h>

#include <conio.h>

void main()

{

    int i;

    for(i = 5; i <= 50; i += 5)

        printf(“%d “, i);

    getch();

}

1. ii) 5, 10, 15, … up to 50th term

#include <stdio.h>

#include <conio.h>

void main()

{

    int i;

    for(i = 1; i <= 50; i++)

        printf(“%d “, i*5);

    getch();

}

iii) 1, 2, 4, 8, 16 … (10 terms)

#include <stdio.h>

#include <conio.h>

void main()

{

    int i, n = 1;

    for(i = 1; i <= 10; i++)

    {

        printf(“%d “, n);

        n *= 2;

    }

    getch();

}

1. iv) 999, 728, 511 … (10 terms)

#include <stdio.h>

#include <conio.h>

void main()

{

    int i, n = 999;

    for(i = 1; i <= 10; i++)

    {

        printf(“%d “, n);

        n -= 271;

    }

    getch();

}

1. v) Fibonacci Series (10 terms)

#include <stdio.h>

#include <conio.h>

void main()

{

    int a=1, b=2, c, i;

    printf(“%d %d “, a, b);

    for(i = 3; i <= 10; i++)

    {

        c = a + b;

        printf(“%d “, c);

        a = b;

        b = c;

    }

    getch();

}

1. vi) Pattern

1

22

333

4444

55555

#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”, i);

        printf(“\n”);

    }

    getch();

}