In this blog post, we learn how to write a C program to find square of a number?. We will write the C program to find a square of a number. How to display input number square C programming. Logic to find a square of a given number in C programming.
Example,
Input: 2 Output: 4 Input: 20 Output: 400
C Program to calculate the square of a number:
The below program ask the user to enter the value. After getting the value from the user it will calculate the square of entered number by using arithmetic multiplication operator.
#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; }
Output 1:
Please Enter any integer Value : 20
square of a given number 20.00 is = 400.00
Output 2:
Please Enter any integer Value : 4.5
square of a given number 4.50 is = 20.25
C Program to calculate the square of a number using a function:
The below program ask the user to enter the value. After getting the value from the user it will call a function squareOfNumber() to calculate the square of the entered number. The function squareOfNumber() is using an arithmetic multiplication operator to calculate the square of the input number.
#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 integer Value : "); scanf("%f", &number); square = squareOfNumber(number); printf("square of a given number %.2f is = %.2f", number, square); return 0; }
Output:
Please Enter any integer Value : 4.5
square of a given number 4.50 is = 20.25
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