# C Programming Code Examples

## C > For Loops and While Loops Code Examples

### program to convert Hexadecimal to Octal number system

Counts Leading Zeros in a Binary Number -
Find total leading zeros of a given number (in binary representation) using bitwise operator in C programming. Write a C program code to input any number from user and find total

C Code to find largest element of an Array -
Function to find the largest element in the array. In the following program we are initializing a variable (maxelement) with the first element of given array and then we are

Programming Code to Concatenate String -
To concatenate strings in 'C++' Programming, you have to ask to enter the 2 string and start concatenating one string into other using the strcat() function as shown here in the sample

Convert String to Lowercase using strlwr() -
C code convert uppercase string to lowercase using 'For Loop'. Internally characters in C are represented as integer value known as 'ASCII' value. Which means if we write a or any other

Converts Hexadecimal to Decimal Number -
C program to input hexadecimal number and convert it to Decimal number. Hexadecimal number system is a base 16 number system. It uses 16 symbols to represent all number i.e.

Find diameter circumference area of circle -
C program code input radius of a circle from user and find diameter, circumference and area of the circle. How to calculate diameter, circumference and area of a circle whose...

Code Find sum of Upper Triangular matrix -
Sum of upper triangular matrix is denoted with below image. In below image we need to find sum of matrix elements inside the red triangle. C program to read elements in a...

C++ Calculate Area & Perimeter of Square -
C++ program ask to the user to enter the side length of a square to calculate and displaying the "area and perimeter" of the square. Enter length of a side of square and "calculate area"