C Exercises: Calculate n terms of square natural number and their sum

C For Loop: Exercise-25 with Solution

Write a C program that displays the n terms of square natural numbers and their sum.
The series is as below:
1 4 9 16 ... n Terms

Sample Solution:

C Code:

#include <stdio.h> // Include the standard input/output header file.

int main() {
    int i, n, sum = 0; // Declare variables for loop control and sum calculation.

    printf("Input the number of terms : "); // Prompt the user for input.
    scanf("%d", &n); // Read the value of 'n' from the user.

    printf("\nThe square natural numbers up to %d terms are :", n); // Print a message.

    for(i = 1; i <= n; i++) // Loop to calculate square of natural numbers.
    {
        printf("%d  ", i*i); // Print the square of the current natural number.
        sum += i*i; // Add the square to the running sum.
    }

    printf("\nThe Sum of Square Natural Numbers up to %d terms = %d \n", n, sum); // Print the sum.

    return 0; // Return 0 to indicate successful execution.
}

Sample Output:

Input the number of terms : 5                                                                                 
                                                                                                              
The square natural upto 5 terms are :1  4  9  16  25                                                          
The Sum of Square Natural Number upto 5 terms = 55 

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