Divide two numbers or print if division isn't possible

Last update on March 18 2025 13:28:43 (UTC/GMT +8 hours)

C Practice Exercise

Write a C program to calculate the sum of all numbers not divisible by 17 between two given integer numbers.

Sample Solution:

C Code:

#include <stdio.h>
int main() {
    int x, y, temp, i, sum=0;

    // Prompt for user input
    printf("\nInput the first integer: ");
    scanf("%d", &x);
    printf("\nInput the second integer: ");
    scanf("%d", &y);

    // Swap values if x is greater than y
    if(x > y) {
        temp = y;
        y = x;
        x = temp;
    }

    // Calculate the sum of numbers not divisible by 17
    for(i = x; i <= y; i++) {
        if((i % 17) != 0) {
            sum += i;
        }
    }

    // Display the sum
    printf("\nSum: %d\n", sum);

    return 0;
}

Sample Output:

Input the first integer: 50                                            
                                                                       
Input the second integer: 99                                           
                                                                       
Sum: 3521

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to sum all numbers between two given integers, excluding those that are multiples of a user-specified number.
• Write a C program to calculate the sum of all prime numbers between two integers while excluding composite numbers.
• Write a C program to compute the sum of numbers between two integers, excluding even numbers from the total.
• Write a C program to sum numbers in a given range while applying multiple exclusion criteria (e.g., multiples of 17 and multiples of 5).

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