C Programs a C programmer should know

1. Write a c program to check given number is perfect number or not.

2. Write a c program to check given number is Armstrong number or not.

3. Write a c program to check given number is prime number or not.

4. Write a c program to reverse any number.

5. Write a c program to check given number is strong number or not.

6. Write a c program to find out sum of digit of given number.

7. Write a c program to check given number is palindrome number or not.

8. Write a c program to check given string is palindrome number or not.

9. Write a c program to find out power of number.          

10. Write a c program to add two numbers without using addition operator.

11. Write a c program to subtract two numbers without using subtraction operator.

12. Write a c program to find largest among three numbers using binary minus operator.

13. Write a c program to find largest among three numbers using conditional operator

14. Write a c program to find out generic root of any number.

15. Write a c program to solve quadratic equation.

16. Write a c program which passes one dimension array to function.

17. Write a c program which passes two dimension array to function.

18. Write a c program which passes structure to function.

19. Write a c program for Floyd’s triangle.

20. Write a c program to print Pascal triangle.

21. Write a c program to generate multiplication table.

22. Write a c program to get factorial of given number.

23. Write a c program to find out prime factor of given number.

24. Write a c program to find out NCR factor of given number.

25.  Write a c program to print Fibonacci series of given range.

26. Write a c program to print ASCII value of all characters.

27. Write a c program to check given year is leap year or not.

28. Write a c program which takes password from user.

29. Write a scanf function in c which accept sentence from user.

30. Write a scanf function in c which accept paragraph from user.

31. Write a c program to print the all prime numbers between 1 to 300.

L.C.M and H.C.F.

1.  Write a c program to find out L.C.M. of two numbers.

2. Write a c program to find out H.C.F. of two numbers.

3. Write a c program to find out G.C.D. of two numbers.

Swapping

1. Write a c program to swap two numbers.

2. Write a c program to swap two numbers without using third variable.

3. Write a c program for swapping of two arrays.

4. Write a c program for swapping of two string.

Conversion

1. Write a c program to convert decimal number to hexadecimal number.

2. Write a c program to convert decimal number to octal number.

3. Write a c program to convert octal number to decimal number.

4. Write a c program to convert octal number to hexadecimal number.

5. Write a c program to convert hexadecimal number to decimal number.

6. Write a c program to convert hexadecimal number to octal number.

7. Write a c program to convert binary number to decimal number.

8. Write a c program to convert binary number to hexadecimal number.

9. Write a c program to convert binary number to octal number.

10. Write a c program to convert decimal number to binary number.

11. Write a c program to convert hexadecimal number to binary number.

12. Write a c program to convert octal number to binary number.

13. Write a c program to convert farehnite to centigrade.

14. Write a c program to convert centigrade to farehnite.

String

1. Write a c program to convert the string from upper case to lower case.

2. Write a c program to convert the string from lower case to upper case.

3. Write a c program to delete the all consonants from given string.

4. Write a c program to count the different types of characters in given string.

5.  Write a c program to sort the characters of a string.

6. Write a c program for concatenation two strings without using string.h header file.

7. Write a c program to find the length of a string using pointer.  

8. Write a c program which prints initial of any name.

9. Write a c program to print the string from given character.

Matrix

1. Write a c program for addition of two matrices.

2. Write a c program for subtraction of two matrices

3. Write a c program for multiplication of two matrices.

4. Write a c program to find out sum of diagonal element of a matrix.

5. Write a c program to find out transport of a matrix.

File

1. Write a c program to open a file and write some text and close its.

2.  Write a c program to delete a file.

3. Write a c program to copy a file from one location to other location.

4. Write a c program to copy a data of file to other file.

5. Write a c program which display source code as a output.

6. Write a c program which writes string in the file.

7. Write a c program which reads string from file.

8. Write a c program which writes array in the file.

9. Write a c program which concatenate two file and write it third file.
10. Write a c program to find out size of any file.
11. Write a c program to know type of file.
12. Write a c program to know permission of any file.
13. Write a c program to know last date of modification of any file.14. Write a c program to find size and drive of any file.

Complex number

1. Write a c program for addition and subtraction of two complex numbers.

2. Write a c program for multiplication of two complex numbers.

3. Write a c program for division two complex numbers.

Series

1. Write a c program to find out the sum of series 1 + 2 + ….  + n.

2. Write a c program to find out the sum of series 1^2 + 2^2 + …. + n^2.

3. Write a c program to find out the sum of series 1^3 + 2^3 + …. + n^3.

4. Write a c program to find out the sum of given A.P.

5. Write a c program to find out the sum of given G.P.

6. Write a c program to find out the sum of given H.P.

7. Write a c program to find out the sum of series 1 + 2 + 4 + 8 … to infinity.

Array

1. Write a c program to find out largest element of an array.

2. Write a c program to find out second largest element of an unsorted array.

3. Write a c program to find out second smallest element of an unsorted array.

4. Write a c program which deletes the duplicate element of an array.

5. Write a c program for delete an element at desired position in an array.

6. Write a c program for insert an element at desired position in an array.

Sorting

1. Write a c program for bubble sort.

2. Write a c program for insertion sort.

3. Write a c program for selection sort.

4. Write a c program for quick sort.

5. Write a c program for heap sort.

6. Write a c program for merge sort.

7. Write a c program for shell sort.

Recursion

1. Write a c program to find factorial of a number using recursion.

2. Write a c program to find GCD of a two numbers using recursion.

3. Write a c program to find out sum digits of a number using recursion.

4. Write a c program to find power of a number using function recursion.

5. Write a c program to reverse any number using recursion.

Size of data type

1. Write a c program to find the size of int without using sizeof operator.

2. Write a c program to find the size of double without using sizeof operator.     

3. Write a c program to find the size of structure without using sizeof operator.

4. Write a c program to find the size of union without using sizeof operator.

Using pointer

1. Write a c program for concatenation two string using pointer.

Searching

1. Write a c program for linear search.

2. Write a c program for binary search.

3. Write a c program for binary search using recursion.

Area and volume

1. Write a c program to find the area of circle.

2. Write a c program to find the area of any triangle.

3. Write a c program to find the area of rectangle.

4. Write a c program to find the area of equilateral triangle.

5. Write a c program to find the area of trapezium.          

6. Write a c program to find the area of right angle triangle.         

7. Write a c program to find the volume and surface area of cube.

8. Write a c program to find the surface area and volume of a cone.

9. Write a c program to find the perimeter of a circle, rectangle and triangle.