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

## C Basic Declarations and Expressions: Exercise-63 with Solution

Write a C program that accepts a positive integer n less than 100 from the user. It prints out the sum of 1^{4} + 2^{4} + 4^{4} + 7^{4} + 11^{4} + • • • + m^{4}. 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

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**Next:** Write a C program that accepts integers from the user until a zero or a negative number, display the number of positive values, the minimum value, the maximum value and the average of all numbers.

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