C Programs

C Programs with programming examples for beginners and professionals covering concepts, control statements, c array, c pointers, c structures, c union, c strings and more.

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C Programs

C programs are frequently asked in the interview. These programs can be asked from basics, array, string, pointer, linked list, file handling etc. Let's see the list of c programs.

1) Fibonacci Series

Write a c program to print fibonacci series without using recursion and using recursion.

Input: 10

Output: 0 1 1 2 3 5 8 13 21 34

2) Prime number

Write a c program to check prime number.

Input: 44

Output: not prime number

Input: 7

Output: prime number

3) Palindrome number

Write a c program to check palindrome number.

Input: 329

Output: not palindrome number

Input: 12321

Output: palindrome number

4) Factorial

Write a c program to print factorial of a number.

Input: 5

Output: 120

Input: 6

Output: 720

5) Armstrong number

Write a c program to check armstrong number.

Input: 153

Output: armstrong

Input: 22

Output: not armstrong

6) Sum of Digits

Write a c program to print sum of digits.

Input: 234

Output: 9

Input: 12345

Output: 15

7) Reverse Number

Write a c program to reverse given number.

Input: 123

Output: 321

8) Swap two numbers without using third variable

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

Input: a=10 b=20

Output: a=20 b=10

9) Print "hello" without using semicolon

Write a c program to print "hello" without using semicolon

10) Assembly Program in C

Write a c program to add two numbers using assembly code.

11) C Program without main() function

Write a c program to print "Hello" without using main() function.

12) Matrix Multiplication

Write a c program to print multiplication of 2 matrices.

Input:

first matrix elements:
1 1 1
2 2 2
3 3 3
second matrix elements
1 1 1
2 2 2
3 3 3

Output:

multiplication of the matrix:
6 6 6
12 12 12
18 18 18

13) Decimal to Binary

Write a c program to convert decimal number to binary.

Input: 5

Output: 101

Input: 20

Output: 10100

14) Alphabet Triangle

Write a c program to print alphabet triangle.

Output:

     A
    ABA
   ABCBA
  ABCDCBA
 ABCDEDCBA

15) Number Triangle

Write a c program to print number triangle.

Input: 7

Output:

enter the range= 6
      1
     121
    12321
   1234321
  123454321
 12345654321

16) Fibonacci Triangle

Write a c program to generate fibonacci triangle.

Input: 5

Output:

17) Number in Characters

Write a c program to convert number in characters.

Input: 5

Output: five

Input: 203

Output: two zero three

Next TopicFibonacci Series in C

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C Programs

C Programs

1) Fibonacci Series

2) Prime number

3) Palindrome number

4) Factorial

5) Armstrong number

6) Sum of Digits

7) Reverse Number

8) Swap two numbers without using third variable

9) Print "hello" without using semicolon

10) Assembly Program in C

11) C Program without main() function

12) Matrix Multiplication

13) Decimal to Binary

14) Alphabet Triangle

15) Number Triangle

16) Fibonacci Triangle

17) Number in Characters

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