**The C operators, operands and their mathematical operations program example**

**Compiler: Visual C++ Express Edition 2005**

**Compiled on Platform: Windows XP Pro SP2**

**Header file: Standard**

**Additional library: none/default**

**Additional project setting: Set project to be compiled as C**

**Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C Code (/TC)**

**To do: A very simple mathematical operation to show C operators, operands and their operations**

**To show: How to use the C operator, operation and the operands**

// one line comment in program, C++

/* multiple lines comment, C - Program to display

square and square root for the given floating number */

/* for sqrt() function */

#include <math.h>

/*for printf(), scanf() & other standard formatted i/o */

#include <stdio.h>

int main(void)

{

/* variable named x with floating-point data type */

float x;

/* standard output */

printf("\nEnter one positive number (1, 2, 3. . .): ");

/* standard input, read and store */

/* scanf("%f", &x); */

/* reserve 4 bytes for float */

scanf_s("%f", &x, 4);

printf("\nx = %f ", x);

printf("\nSquare for x is = %f", x * x);

// sqrt() is the predefined function, defined in math.h header file

printf("\nSquare root for x is = %f\n", sqrt(x));

return 0;

}

**
Output example:**

Enter one positive number (1, 2, 3. . .): 100

x = 100.000000

Square for x is = 10000.000000

Square root for x is = 10.000000

Press any key to continue . . .