C Exercises: Accepts a positive integer n less than 100 from the user and prints out the sum

Last update on September 18 2025 12:37:44 (UTC/GMT +8 hours)

Sum the series 1^4+2^4+4^4+...+m^4

Write a C program that accepts a positive integer n less than 100 from the user. It prints out the sum of 1⁴ + 2⁴ + 4⁴ + 7⁴ + 11⁴ + • • • + m⁴. In this case, m is less than or equal to n. Print an appropriate message.
Test data and expected output:
Input a positive number less than 100:
Sum of the series is 1024388

Sample Solution:

C Code:

#include <stdio.h>
int main() {
    int i, j, n, sum_int = 0;

    // Prompt user for input
    printf("Input a positive number less than 100: \n");

    // Read the input value
    scanf("%d", &n);

    // Check if the input is valid
    if (n < 1 || n >= 100) {
        printf("Wrong input\n");
        return 0;
    }

    j = 1;
    for (i = 1; j <= n; i++) {
        sum_int += j * j * j * j;
        j += i;
    }

    // Display the result
    printf("Sum of the series is %d\n", sum_int);

    return 0;
}

Sample Output:

Input a positive number less than 100: 68
Sum of the series is 37361622

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to calculate the sum of n^4 for all n from 1 to m using a loop.
• Write a C program to compute the sum of fourth powers of even numbers up to a given limit.
• Write a C program to sum the series of fourth powers for a series of numbers provided by the user.
• Write a C program to compute the sum of 1^4+3^4+5^4+… for odd numbers up to m.

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