# C Program to Find Square of a Number

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```

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