C program to find square of a number; Through this tutorial, you will learn how to find the square of a number in the c program with the help of function and normal formula.

## Algorithm and Programs to Find Square of a Number in C

Let’s use the following algorithm and program to find square ⬜ of a number in c:

- Algorithm to Find Square of a Number
- C Program to Find Square of a Number using Formula
- C Program to Find Square of a Number using Function

### Algorithm to Find Square of a Number

Use the following algorithm to write a program to find square of a number; as follows:

- Step 1: Start Program
- Step 2: Read the number from user and store it in a.
- Step 3: Calculate square of number a using formula or function
- Step 4: Print square of number
- Step 5: Stop Program

### C Program to Find Square of a Number using Formula

#include<stdio.h> int main() { float number, square; printf("Please Enter any integer Value : "); scanf("%f", &number); square = number * number; printf("square of a given number %.2f is = %.2f", number, square); return 0; }

**The output of the above c program; as follows:**

Please Enter any integer Value : 20 square of a given number 20.00 is = 400.00

### C Program to Find Square of a Number using Function

#include<stdio.h> //function to calculate square of number float squareOfNumber(float num) { return (num*num); } int main() { float number, square; printf("Please Enter any Value : "); scanf("%f", &number); square = squareOfNumber(number); printf("square of a given number %.2f is = %.2f", number, square); return 0; }

**The output of the above c program; as follows:**

Please Enter any Value : 10 square of a given number 10.00 is = 100.00